The script below creates an event, copies it into the same bank, and sets angles on/off and names them.

It works about 4 times and the 5th time, I get:
"Script '-5_Guest' Error Line 15: The process cannot access the file 'E:\vMix_IRP\replay.xml' because it is being used by another process."
Line 15 is: Function=ReplayCopyLastEvent&Value=1

Kind thanks for any advice.

Function=ReplaySelectEvents2
Sleep 10
Function=ReplayACamera1
Sleep 10
Function=ReplayBCamera1
Sleep 10
Function=ReplayMarkInOutLive&Value=5
Sleep 10
Function=ReplayToggleLastEventCamera2
Sleep 10
Function=ReplayToggleLastEventCamera1
Sleep 10
Function=ReplaySetLastEventTextCamera&Value=2,Score_Guest_1eh_SlamR
Sleep 20
Function=ReplayCopyLastEvent&Value=1
Sleep 20
Function=ReplayToggleLastEventCamera1
Sleep 10
Function=ReplayToggleLastEventCamera2
Sleep 10
Function=ReplaySetLastEventTextCamera&Value=1,Score_Guest_1eh_Main
Sleep 10
Function=ReplaySetLastEventTextCamera&Value=2,...

(maybe it works better to first copy the event into a different bank, and only then copy it back to the bank it came from?)

I had it at 20 which did not help.
But thanks for the suggestion, I will try it at e.g. 100 and see what happens.

Btw the .xml file is on a fast NVMe drive that only does IRP recording so if it's a write-latency-issue, that should be manageable.