Hi J.Petersen,
First things first: always remember to search before posting. You would have found your own answer if you searched for "WLM Safe" as there already some threads about this
Anyways, what you're talking about is about a 3rd party script.
A bit of a questionable script for that matter.
As such this has got not much to do with Messenger Plus! itself, but all with that specific script. And thus I'll request this thread to be moved to the scripting forum instead.
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The script hasn't been updated since a long time. It contains bugs and it uses online services which even don't exist anymore. It also does some questionable things and as such might be a privacy invasion (it collects your email address).
Because of all of this, it has also been removed from the scripting database a while ago.
So, my advise would be to simply remove it from your pc:
Plus! > Preferences & Options > Scripts > Plus! Scripts > select '
WLM Safe' > Remove
See also:
CookieRevised's reply to WLM Safe 5.0 won't install