Did this work under an earlier version of the tools? If so, maybe you can revert to that.

It could also be that the tool might be trying to write to a restricted directory. If you can identify where the tool is trying to save its configuration, you might need to modify the access rights to permit to tool to create and write its files. Sorry, but I do not know where that is. I have had problems with Visual Studio itself being prevented from saving information to restricted locations.

Otherwise, this sounds like a bug report to the Qt team.