Hello hello hello.
I had some difficulty getting the flash debugger working on Linux, but I finally got it. So here's a short tutorial for those of you who might be having trouble as well.
First of all, download the debug plugin here. Extract it to a convenient location.
The problem seems to be that flash tends to install crap all over the system, so you may have conflicting libraries. Here's what you do:
1. Uninstall flash. In the terminal, enter: sudo apt-get purge flashplugin-nonfree flashplugin-installer
2. then: sudo apt-get autoremove
3. Reinstall flash: sudo apt-get install flashplugin-nonfree
4. Now move the library you just downloaded to the location of the flash library. Example: sudo mv ~/flashplayer_10_plugin_debug/libflashplayer.so /usr/lib/flashplugin-installer/libflashplayer.so
This worked for me. Hopefully it helps. Do your part as a tester to ensure that Glitch runs as well on Linux as it does other OS's. GOD knows there aren't enough good Linux games out there.