Had MacOs Apple Silicon version from 2/16/2026 installed.
I opened a file on my computer that was previously saved.
It initially showed the file contents and let me add a new task to it.
I closed the file and application.
I opened it again and then it looks like it tried to perform an update to version 3.4.3392, see log below.
However, I didn't know it tried to perform the update until after I closed the application and then tried to open the file a third time and the file information was wiped out and it wasn't reading it correctly because the project was empty.
Then I started trying to figure out what happened. I tried recovering it but that didn't work either.
I'm on macOS Sonoma 14.5 (23F79) with Apple M2 Max chip.
Currently it thinks the version is updated to 3.4.3392 with no further updates but the current version is actually 3.4.3394, so it's not picking up the updates anymore either.
Here's the contents from the log and I changed my username folder to "myusername":
/Users/myusername/ganttproject.log
GanttProject 3.4.3392
Settings file:
location: /Users/myusername/.ganttproject
size:5519
is readable: true
java.class.path: /Applications/GanttProject.app/Contents/app:/Applications/GanttProject.app/Contents/app/eclipsito.jar:/Applications/GanttProject.app/Contents/app/lib/slf4j-api-2.0.17.jar:/Applications/GanttProject.app/Contents/app/lib/logback-classic-1.5.18.jar:/Applications/GanttProject.app/Contents/app/lib/logback-core-1.5.18.jar
java.home: /Applications/GanttProject.app/Contents/runtime/Contents/Home
java.ext.dirs: null
java.io.tmpdir: /var/folders/cy/_b6fvjw15pvgss66pc8__p_40000gn/T/
java.runtime.version: 21.0.9+15-LTS
java.vendor: BellSoft
java.vm.name: OpenJDK 64-Bit Server VM
java.vm.vendor: BellSoft
java.vm.version: 21.0.9+15-LTS
os.arch: aarch64
os.name: Mac OS X
os.version: 14.5
sun.java.command: com.bardsoftware.eclipsito.Launch --verbosity 4 --version-dirs plugins:~/.ganttproject.d/updates --app net.sourceforge.ganttproject.GanttProject
user.country: US
user.dir: /Applications/GanttProject.app/Contents/app
user.home: /Users/myusername
user.language: en
user.timezone: America/Los_Angeles
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: waiting for activity=Task table inserted into the component tree
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: waiting for activity=Task table initialization
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: activity completed=Task table initialization
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: activity completed=Task table initialization
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: reached.
21:39:17 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:17 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/com/sandec/mdfx/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:17 [JavaFX Application Thread] WARN javafx.css - Resource "/com/sandec/mdfx/mdfx-default.css" not found.
21:39:17 [JavaFX Application Thread] INFO App.Dirs - Cache directory=/Users/myusername/Library/Caches/GanttProject/3.4 was set using AppDirs library
21:39:17 [ForkJoinPool.commonPool-worker-1] WARN Eclipsito - Received HTTP 404 when requesting updates from https://www.ganttproject.biz/dl/updates/ganttproject-3.0.json
21:39:26 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:26 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/com/sandec/mdfx/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:26 [JavaFX Application Thread] WARN javafx.css - Resource "/com/sandec/mdfx/mdfx-default.css" not found.
21:39:26 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/com/sandec/mdfx/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:26 [JavaFX Application Thread] WARN javafx.css - Resource "/com/sandec/mdfx/mdfx-default.css" not found.
21:39:46 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/platform/Update.css: Expected '' while parsing '-fx-font-size' at [366,17]
21:39:46 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:57 [pool-4-thread-1] INFO App - [GanttOptions] save(): finished!!
21:40:08 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/platform/Update.css: Expected '' while parsing '-fx-font-size' at [366,17]
21:40:08 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
Please let me know if you would like any further information.
Had MacOs Apple Silicon version from 2/16/2026 installed.
I opened a file on my computer that was previously saved.
It initially showed the file contents and let me add a new task to it.
I closed the file and application.
I opened it again and then it looks like it tried to perform an update to version 3.4.3392, see log below.
However, I didn't know it tried to perform the update until after I closed the application and then tried to open the file a third time and the file information was wiped out and it wasn't reading it correctly because the project was empty.
Then I started trying to figure out what happened. I tried recovering it but that didn't work either.
I'm on macOS Sonoma 14.5 (23F79) with Apple M2 Max chip.
Currently it thinks the version is updated to 3.4.3392 with no further updates but the current version is actually 3.4.3394, so it's not picking up the updates anymore either.
Here's the contents from the log and I changed my username folder to "myusername":
/Users/myusername/ganttproject.log
GanttProject 3.4.3392
Settings file:
location: /Users/myusername/.ganttproject
size:5519
is readable: true
java.class.path: /Applications/GanttProject.app/Contents/app:/Applications/GanttProject.app/Contents/app/eclipsito.jar:/Applications/GanttProject.app/Contents/app/lib/slf4j-api-2.0.17.jar:/Applications/GanttProject.app/Contents/app/lib/logback-classic-1.5.18.jar:/Applications/GanttProject.app/Contents/app/lib/logback-core-1.5.18.jar
java.home: /Applications/GanttProject.app/Contents/runtime/Contents/Home
java.ext.dirs: null
java.io.tmpdir: /var/folders/cy/_b6fvjw15pvgss66pc8__p_40000gn/T/
java.runtime.version: 21.0.9+15-LTS
java.vendor: BellSoft
java.vm.name: OpenJDK 64-Bit Server VM
java.vm.vendor: BellSoft
java.vm.version: 21.0.9+15-LTS
os.arch: aarch64
os.name: Mac OS X
os.version: 14.5
sun.java.command: com.bardsoftware.eclipsito.Launch --verbosity 4 --version-dirs plugins:~/.ganttproject.d/updates --app net.sourceforge.ganttproject.GanttProject
user.country: US
user.dir: /Applications/GanttProject.app/Contents/app
user.home: /Users/myusername
user.language: en
user.timezone: America/Los_Angeles
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: waiting for activity=Task table inserted into the component tree
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: waiting for activity=Task table initialization
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: activity completed=Task table initialization
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: activity completed=Task table initialization
21:39:16 [JavaFX Application Thread] DEBUG App.Barrier - Barrier UI initialization: reached.
21:39:17 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:17 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/com/sandec/mdfx/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:17 [JavaFX Application Thread] WARN javafx.css - Resource "/com/sandec/mdfx/mdfx-default.css" not found.
21:39:17 [JavaFX Application Thread] INFO App.Dirs - Cache directory=/Users/myusername/Library/Caches/GanttProject/3.4 was set using AppDirs library
21:39:17 [ForkJoinPool.commonPool-worker-1] WARN Eclipsito - Received HTTP 404 when requesting updates from https://www.ganttproject.biz/dl/updates/ganttproject-3.0.json
21:39:26 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:26 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/com/sandec/mdfx/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:26 [JavaFX Application Thread] WARN javafx.css - Resource "/com/sandec/mdfx/mdfx-default.css" not found.
21:39:26 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/com/sandec/mdfx/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:26 [JavaFX Application Thread] WARN javafx.css - Resource "/com/sandec/mdfx/mdfx-default.css" not found.
21:39:46 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/platform/Update.css: Expected '' while parsing '-fx-font-size' at [366,17]
21:39:46 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
21:39:57 [pool-4-thread-1] INFO App - [GanttOptions] save(): finished!!
21:40:08 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/platform/Update.css: Expected '' while parsing '-fx-font-size' at [366,17]
21:40:08 [JavaFX Application Thread] WARN javafx.css - CSS Error parsing jar:file:/Applications/GanttProject.app/Contents/app/plugins/base/ganttproject/lib/ganttproject-26.02.16-SNAPSHOT.jar.lib!/biz/ganttproject/app/mdfx.css: Expected '' while parsing '-fx-font-size' at [16,17]
Please let me know if you would like any further information.