GUI_Spawn disappears, won't open without restart of script

[DMDComposer]

Hi,

Been using this script a while but sometimes I notice when I launch the gui, it'll show up and then close immediately. Almost like I double-hit the open button since hitting it again after the gui is opened will close it. I keep looking through the script to see what could be causing it but I honestly have no clue and was wondering if anyone else has experienced this or has an idea what would cause it?

The simplest fix is just restarting the script and it works like normal for a few hours, or a day or so, and eventually it'll happen again. It's strange and I've been scratching my head for a few weeks about it now.