Gantt Project not opening after installation

GanttProject Desktop Support
1

Hello.

After installing Gantt Project on a computer with W11 and clicking on the desktop icon, the program does not open. The task appears as open, the icon appears on the taskbar but it simply does not open. Is there anything that can be done?

Screenshot_9
Screenshot_9306×221 11.2 KB

2

Did you have GanttProject on this computer before?

3

Yeah. Apparently this started happening after updating the operating system.

4

Try removing .ganttproject file from your home directory. It is possible that GanttProject actually runs fine, but sits somewhere off-screen.

5

By the way, is the splash screen shown?

6

Hihi, I confirm that splash screen appears but then the GUI does not start. No error messages during install or when I try to open the app.

Splash screen
Splash screen649×552 236 KB

GUI not starting
GUI not starting393×349 115 KB

Files installed: ganttproject-3.3.3316 and zulu21.42.19-ca-jdk21.0.7-win_x64

This is a new install of Gantt Project, previous versions not tested.

If I open C:\Program Files (x86)\GanttProject-3.3\ganttproject.bat I get the error on the attached screenshot.

Opening .bat
Opening .bat1807×1003 116 KB

7

Hi, finally managed to get it working.

Procedure:

  1. Uninstall Gantt Project app (I had v3.3)
  2. Install a previous version of GantProject (on my case V3.2 GanttProject - Download)
  3. Update it to last version (V3.3 GanttProject - Download)

After that I had no more issues

8

Helllo!

Giving feedback on my case. The software suddenly started working again.

Thanks for all the help.

9

GanttProject 3.3 requires Java 17 with Java FX modules. Both Azul and Liberica are okay, as soon as they are Java 17 and have Java FX. As we can see on the screen, you have Azul 21 and most likely without Java FX. Chances are that uninstalling it will solve the issue, because GanttProject comes bundled with the required Java Runtime, and will use it unless some other Java runtime is available.

1 Like
10

thanks for checking on us Dimitry!

Since right know its working well I will not change anything, but ok. If I have problems I will uninstall Azul 21 and reinstall Gantt project from scratch.

So, in order to have it all clear:
If I unsinstall any Java on my computer, and install last version of Gant project, it will install the needed java as well, right?

No need by users to install any specific version of Java, just Gantt project and uninstall previous java if there.

Many thanks!

11

GanttProject packages for Windows and macOS are bundled with the required Java Runtime. Usually the users don’t need to download anything else.

1 Like