ShellExecute doesn't seem to trigger every time?

[JohnOne]

I can see you returning errors from your _ChangeWallpaper function, but I don't see you checking for them.

[Chimaera]

Erm no ok the change wallpaper is made or modded by NDoG, i just use it in the script, i did mention that earlier and i havent looked at that part yet

But that works every time you run it on its own.

I just added this out of curiosity at the end of the 1920 x 1080 section

MsgBox( 0, "test", "Case 1080 used")

and strangely enough button 1 doesn't show it but button 2 does

[JohnOne]

So because it works on it's own, you feel (even after five days of problem) that

you simply do not need to test for errors.

Makes perfect sense.

[Chimaera]

No need to be rude, the script has been used hundreds of times without error over many months it would have shown before now, the errors only started when i called it from a gui 5 days ago.

However yes its a possibility so when i work out how to check in that script ill add it and see

[JohnOne]

There is no rudeness, stop projecting?

Where you are/author is setting @error, change it to Exit(some int).

Then ShellExecuteWait will return the exit code of it.