[Bug 51767] New: IWTE fails to launch, cannot create temporary directory

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51767

Bug ID: 51767
           Summary: IWTE fails to launch, cannot create temporary
                    directory
           Product: Wine
           Version: 6.16
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 70671
  --> https://bugs.winehq.org/attachment.cgi?id=70671
wine-6.16 log

IWTE is a modding tool for Rome: Total War, Medieval 2 Total War and Rome
Remastered. You can download the tool here:
https://www.twcenter.net/forums/downloads.php?do=file&id=2741

When I try to launch IWTE_launch.bat, the application reports the following
error:

[280] INTERNAL ERROR: cannot create temporary directory!

I also tried this in wine-staging, and the error message changed somewhat to

fopen: Permission denied