Hi! I see you're having trouble with the LocalSend app's Linux GUI crashing and prompting you to force quit. Let’s get this sorted out together.

To start, could you tell me a bit more about your situation? For example:
- What Linux distribution and version are you using?
- Are you crashing when doing a specific action (like sending/receiving files)?
- How large are the files or folders you are trying to send, if applicable?
- Is the crash immediate or after some usage time?

In the meantime, here’s a general step-by-step approach to troubleshoot LocalSend crashes on Linux:

1. Check for Large File Issues
LocalSend has been known to crash or slow down when handling very large files or many files at once. If you are transferring big files or large batches, try sending smaller groups to see if that helps.

2. Update LocalSend
Make sure you’re running the latest version of LocalSend, as newer builds include important bug fixes.

3. Firewall and Network Ports
Verify that LocalSend’s port (default is 53317) is not blocked by your firewall or network security tools. Sometimes apps like firewalls or port blockers cause connectivity or stability issues. Disabling or adjusting these temporarily might help identify if that’s the cause3.

4. Run LocalSend from Terminal
Launch LocalSend from a terminal to capture any error messages when it crashes. For example, run:
<br> localsend<br>
or if installed differently, the app’s executable name. Errors or warnings printed there can guide us further.

5. Check System Logs
Review system logs (journalctl -xe or specific application logs) right after a crash to identify if something else triggers it.

6. Reinstall or Build from Source
If you installed from a package, try reinstalling. Alternatively, build LocalSend from source to ensure compatibility with your environment2.

If you could share any error messages you encountered in the terminal or logs, that would help me give you more targeted advice.

Are you comfortable trying these steps? If yes, which one would you like to do first?