Hi @Luds
I had a similar issue but was able to resolve it after some tinkering. My issue was caused by recurring load errors from plugins. If your issue has a similar cause, these links may be of interest. Have a look at the following threads:
Toolbar positions do not remain where placed in SU 2015.
I recently upgraded to 2015. I positioned the various toolbars for the basic program and for specific add ons in the precise locations where these had been located in prior versions of the program and it appeared to be successful. When opening the program again, after having closed out the earlier session and rebooting, the positions of all the add on toolbars reverted to where they were before initially placing them. (Those toolbars a…
Seasons Greetings Everyone
Although I am able to open SU 2015 and operate with few apparent issues, an annoying quirk has begun to occur. Each time the program is initiated a dialog box indicating multiple load errors pops up. Most of these appear to be associated with two extensions (Visualizer and Twilight Render). These add ons were successfully incorporated into SU 2014 without the load error pop up and only showed up after upgrading. I made it a point to include all of the add ons that…