Teseted this in MP and it works great after I read this message from the builder:
I'm very happy that you like our addon!
There shouldn't be any problems to use it in both SP and MP-missions!
The problem for your friend is, that the addon won't work at all for him, right?
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He must place the 21vbGlider.pbo in this directory:
OperationFlashpoint/addons
Not in the:
OperationFlashpoint/RES/AddOns
If he dosen't have an addons folder in the root of OFP, then he should just make one.
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He should also remember to restart OFP after he adds the addon, else the game won't recognice the addon.
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Make sure that his OFP is patched to 1.90 minimum
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When you make a mission, you should either put this line in the INIT.SQS or in the init-field of the soldier. Not both....
That might forces the scripts to run twice, and might cause some strange behaviour with the addon.
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If you made a MP- or SP-mission where you 21vbGlider works...try to send the whole mission to your friend, for him to try.
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Try the above, if you still encounter problems, feel free to mail me!
Best Regards
Gandalf