Mshta.exe popup about: error write protected on USB with write-protect switch

[anonim1979]

Using DSP13 (DVD edition) on write protected USB thumb drive
(like PQI U339XT for example)
I get first DriverPackSolution.exe and then mshta.exe errors - "write impossible disc is write protected..." 4 times on start and then on ALL indvidual driver installs.

In 12.3 it was "only" 4 on start so I could still use it but now it is
too much.

What to delete/what setting change in .js file(s) to get rid of it?
Force DVD read only mode?