MacOS – Mouse sensitivity is set to zero on game startup

I'm currently using a Macbook Pro and wanted to play a game and came up with Warsow. I downloaded it, dropped the app in my applications folder (is it even called folder on Macs?^^). As soon as I started the game I noticed my mouse sensitivity was significantly lower. I opened the options and played around with the ingame sensitivity and it didn't change my mouse speed at all.

After quitting the game and looking up my mouse settings in the system preferences it was set to 0 (or the lowest possible setting on the slider).

Important notices:

• I'm using a "Gaming" mouse (Speedlink Kudos), which works fine. Even some of the side button settings I made on my Windows machine work properly. Also the DPI change works. Sadly Speedlink only provides Windows drivers
• I'm using "Kill Mouse Accell" app by adding "Automatic Kill Mouse Accell" (Apple Script) to my starting objects. This is intended to "disable" the nasty mouse accellaration of Macs.

Warsow related results:

The only search result related to Warsow on Macs is this forum posting on warsow.net:

Disabling that !"#€%&/ mouse acceleration, is it possible?

There are several ways to make this darned broken mouse acceleration more tolerable.

First way is to use built-in hack in Warsow to disable it (same as in NQuake/QuakeWorld Mac version): in_disablemacosxmouseaccel 1 and restart Warsow

Known bug with this is that this also resets mouse sensitivity setting to zero on some Macs.

(source: http://www.warsow.net/forum/thread/11839/1)

However no comments relating this particular issue were made in the answers. Same with search results.

My question:

I don't really know what to do. What may solve my problem? Or if it can't be solved, how to counteract? (Maybe with an apple script bound to a shortcut which sets the mouse sensitivity back to normal?)