First, in the menu bar go to window--> workspace and click on standard. Arrange your UI as desired, then in the menu bar go to window--> workspace and select save layout. This saves your arrangement of the UI. Close and reopen iclone, it should start with your desired layout. If it doesn't i suspect you antivirus might be blocking this changes, this is because some settings are stored in the windows registry (not sure if this is the case for layout settings but many others like max texture size are stored there) instead of some ini file or cfg file. Add iclone to the list of trusted applications (or whatever name your antivirus has for software that should not be monitored). After this you might need to redo all the steps i mentioned above but hopefully it will be last time you need to do this. I do not have this issue, running studio drivers version 430.84 but i don't think it is driver issue. The crashes when you create a light is a bug introduced in this version but as far as i can tell this is the only thing crashing iclone right now.

Hope this helps.

ps the forum renames images that are inserted in the post, if they are attached they retain their name (your post made me discover this)

I'm using the latest Studio drivers (441.12), and I can confirm that the layout is preserved. Following raxel67's suggestion should resolve your issue.

---

68% of original size (was 740x27) - Click to enlarge