Originally Posted by Chuck56
You need to perfectly match package name inside the slack-desc file and the slackbuild file name.
"TeamSpeak3" inside the slack-desc file does not match "teamspeak.SlackBuild" in the file name
The name of the slackbuild script doesn't matter. The name inside the slack-desc should match $PRGNAM if you're using a standardised slackbuild script.
Brixton' is on the money. Because of the hyphen in the version number, instead of seeing
"TeamSpeak3", version "3.0.0-beta36"
the package tools are probably interpreting the package name as
"TeamSpeak3-3.0.0", version "beta36"
Swap it for an underscore, or another dot or any other valid character and all should be fine.