Importing modpacks doesn't work

[Dsettimi]

Modpack

Other...

Modpack version

47.3.12

Launcher

FTB App

Has the pack been modified

Yes

Log Files

No response

Describe the bug

I cant import a modpack from my downloads folder to the launcher

Steps to reproduce

1. Go to Curse import
2. Drag and drop modpack from downloads folder (zip file)
3. nothing happens, no error message, no sign, nothing.

Expected behaviour

I want a clearer or different way I can do this

Screenshots

Additional information

I have done this before with no issue, now, it is not working.

[Dsettimi]

(also, dont mind the modpack name)

[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)

[MichaelHillcox]

Please do the above

[stykemain]

Hello, Im getting the same exact error no matter which modpack i choose.
The debug code is: dbg:Ls7GAsbVpvY

[WyFryMU]

Hello, Im getting the same exact error no matter which modpack i choose. The debug code is: dbg:Ls7GAsbVpvY

Go to: C:\Users\***\AppData\Local\.ftba\bin\versions\1.21.1 rename __tmp_1.21.1.jar to 1.21.1.jar. Then redownload whatever 1.21.1 pack you were trying to install.

For diagnosing the problem yourself (and to see how i did it), you can go to C:\Users\***\AppData\Local\.ftba\logs, open your Debug.log. Then you'll see a line that looks like java.nio.file.FileSystemException: C:\Users\***\AppData\Local\.ftba\bin\versions\1.21.1\__tmp_1.21.1.jar -> C:\Users\***\AppData\Local\.ftba\bin\versions\1.21.1\1.21.1.jar: The process cannot access the file because it is being used by another process
Which this means for whatever reason, the ftb app wasn't able to rename the file for you, as it was being used by some other program.

[MichaelHillcox]

Please can someone provide actual logs?

[madkat]

@MichaelHillcox I was running into this same issue, so I poked around. I noticed from this log that it looked like it was competing for file locks on the same instance that was just created. Turning off parallel download threads fixed the issue and let me import packs.
2025-01-15-1.log.gz