Blight has been updated with a release that should resolve the "background process" Istaria issue. This is where you close Istaria, but it is still running in the background. Please be sure to patch to Blight, and if you still have this issue, please reply to this thread or send in a support ticket.
Here's the change list:
Features:
Right click to add notes from item creation window (for materials needed)
Remove joystick check code
Add Item Filters to Inventory
Fixes / Dev:
Code for tracking obscure crash
Add new command PrintLocalObjects so that the coordinates / rotation of local objects are output to debug log. Will be used for future support to allow player world building, and then submit log of changes.
Misc crash fixes / shutdown fixes
Thank you for your help in testing the latest client releases.