Problem when trying to start Infinity evolved 1.7

[Tomsgaga]

What Operating System

Windows 8.1

Debug Code

[21:13:30] [Instance Launcher 1/ERROR] [net.creeperhost.creeperlauncher.api.handlers.instances.LaunchInstanceHandler]: Failed to launch instance. net.creeperhost.creeperlauncher.pack.InstanceLaunchException: Failed to prepare instance 'FTB Infinity Evolved 1.7'(fdd1a662-540e-4e62-8b14-c3ef425b5f8b). at net.creeperhost.creeperlauncher.pack.InstanceLauncher.prepareProcess(InstanceLauncher.java:514) ~[launcher-c3a5d288d9-all.jar:?] at net.creeperhost.creeperlauncher.pack.InstanceLauncher.launch(InstanceLauncher.java:152) ~[launcher-c3a5d288d9-all.jar:?] at net.creeperhost.creeperlauncher.pack.Instance.play(Instance.java:416) ~[launcher-c3a5d288d9-all.jar:?] at net.creeperhost.creeperlauncher.api.handlers.instances.LaunchInstanceHandler.lambda$handle$0(LaunchInstanceHandler.java:56) ~[launcher-c3a5d288d9-all.jar:?] at java.util.concurrent.CompletableFuture$AsyncRun.run(Unknown Source) ~[?:?] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?] at java.lang.Thread.run(Unknown Source) ~[?:?] Caused by: java.lang.NullPointerException: Cannot invoke "com.google.gson.JsonElement.isJsonObject()" because "element" is null at net.covers1624.jdkutils.JdkInstallationManager$Installation.migrate(JdkInstallationManager.java:383) ~[launcher-c3a5d288d9-all.jar:?] at net.covers1624.jdkutils.JdkInstallationManager$Installation.access$000(JdkInstallationManager.java:366) ~[launcher-c3a5d288d9-all.jar:?] at net.covers1624.jdkutils.JdkInstallationManager.(JdkInstallationManager.java:66) ~[launcher-c3a5d288d9-all.jar:?] at net.creeperhost.creeperlauncher.Constants.getJdkManager(Constants.java:162) ~[launcher-c3a5d288d9-all.jar:c3a5d288d9] at net.creeperhost.creeperlauncher.pack.InstanceLauncher.prepareProcess(InstanceLauncher.java:334) ~[launcher-c3a5d288d9-all.jar:?] ... 7 more

Describe the bug

Idk... try to launch the game but 5 sec later there is: "unable to start pack... please see the instance log" and "failed to prepare instance 'FTB Infinity Evolved 1.7' (fdd1a662-540e-4e62-8b14-c3ef425b5f8b). because.. java.lang.NullPointerException: Cannot invoke "com.google.gson.JsonElement.isJsonObject()" because "element" is null

Steps to reproduce

like I mentioned above :(

Expected behaviour

I´m not the smartest when it comes to certain things. I just want to play the old FTB versions from older times. ;)

Screenshots

No response

Additional information

No response

[ftb-helper]

Hay, thanks for the issue! Unfortunately it looks like you've not provided a Debug code... We require this as it helps us find your issue as quickly as possible.

Please do the following

Upload Logs using the app

Open the Settings page in the FTB App, then go to the app tab and click on the Upload Logs button, this might take a few seconds to complete. Once it's done, you will see a message saying that the code has been copied to your clipboard.

Either edit your original issue or add a comment with this code.

Using the FTB Debug tool

Only use this method if asked to or if your app wont open fully/the above method doesn't work, you can use the FTB Debug tool to generate a code for you.

Please use the link below to download and run the FTB Debug tool. This is a tool built by our App Developers and will provide you a code that you need to attach to this issue. Please either edit your original issue or add a comment with this code. If you need more help running this tool, you can follow our guide on how to use the FTB Debug tool.

Windows // MacOS // Linux // Windows (Arm) // MacOS (Arm) // Linux (Arm)

[Tomsgaga]

Here the debug code:) https://pste.ch/ivugukuqat

[Gaz492]

If you go to the settings in the FTB App, you should see 3 buttons under common folders, click on the one named Home
This should then open a new window to where the app stores its data, close the app then rename the bin folder to bin_old
Now start the app up again, right-click the modpack and select settings, you should now see the modpack settings and a repair button. If you click the repair button, this should validate the modpack files and if all goes well, you should be able to play the pack after it's finished repairing.

[Tomsgaga]

Thank you very much! Works well! Have a great day! ;)