WifiSpoof: Changing MAC Address works but can not connect to Accesspoints (iMac 2010)

[RoketteS]

All,

I am a very happy customer of the Sweetp Product "WifiSpoof" but encountered a strange error only happening on an iMac late 2010.

My setup:

• iMac late 2010
  Whenever I change the Mac address of my internal wifi adapter en1 accessing any (of my previous accessible by the same machine) Wifi hotspots are not reachable: The system tries and tries and fails with a exclamation point in the Wifi symbol on my iMac.

I tried this on several MacBooks and there I can change it flawless without any issues.

I can reach my hotspots only if I do not change the Softwa Wifi Mac Address!
Tried a whole lot of things and searched all overt the Internet (being a skilled IT specialist).

Regards,
Steve