I'm sorry I posted a bunch of problems & disappeared. Some unforeseen holiday activities came up & I couldn't get back.
Glad you got the testers you needed & are now complete.
I noticed nobody had the issues I did, so likely a problem on my side & I assume you received enough feedback to finalise the script.
But if you are interested, I still have 2 issues;
1. If I try to use an iso located in /home/user. Immediate crash when I open the /home/user folder from the iso selection dialog.
If I use an iso in / or /Downloads, runs fine.
2. If I try to create a new usb install whose name is the same as the existing install, it rejects simply overwriting the existing system with one of the same name. If I choose a unique name, the existing system is overwritten with the uniquely named one, resulting in a one system usb, as expected.
These were using lusbc_0.9.7.sh.
Here's my terminal effort. Doing something dumb, I know.