Hello,
The problem is this...

When attempting to insert a link using any method (bbcode, html, GUI button), links containing the "&" symbol break, and insert "amp;amp;" immediately after the "&" in the new code.

for example:
This:
"http://mwo.smurfy-net.de/mechlab#i=171&l=2784903914275aa9c854c211e4516bcdfc1e7c1d"

Becomes this:
"http://mwo.smurfy-net.de/mechlab#i=171&l=2784903914275aa9c854c211e4516bcdfc1e7c1d"

Our users have been forced to use tinyurl.com to work around this, which is doable but frustrating.
Any help would be, well... helpful

Thanks!

Thanks for reporting! This has now been fixed.

Thanks for the response, and solution.