Mt4 MetaEditor - Could not launch the compiler?

This just started today-maybe just after lunch when I returned to my desk.

This is the message I get when I try to compile on my main PC---Could not launch the compiler---I have multiple MT4 accounts loaded. Funny thing is, on my old machine I can compile no problem. The old PC has resource problems, I don't do anything with it but open a couple of charts, so no anti-virus software, etc is running. So I was thinking one of my protection software programs did something like remove metalang.exe (the compiler file), but not the case. It is in the folder, I copied from the old PC anyway. no help.

I did get the MT4 upgrade message today, no I did not upgrade, I am running Build 229.

This is a first for me. anybody had this experience or got a clue?

cheers

I upgraded my PC last summer and didn't have any problems. I re-installed MT4 from my broker's website. The only files I copied from the old PC were my source code and sounds files.

I don't think copying is the same as installing and there could be an issue with file directory names or registry entries. Re-installing is so simple it isn't worth spending much time chasing the problem.

Yeah, I been reading everything i could find and that's about the only other answer besides MetaLang file being removed. My anti-virus ran on both machines today and Windows Defender ran on the main---I had it pegged as the culprit but it shows "no unwanted or harmful software detected" message and no activity in logs. Oh well....if this is the worst thing that happens to me for rest of my life I'm in good shape


cheers