ON THE CLONED COMPUTER :

Open RegEdit.exe

and delete the following registry folder :

for 64 bit Windows 7 :
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\TeamViewer\VersionX

for 32 bit Windows 7 :
HKEY_LOCAL_MACHINE\SOFTWARE\TeamViewe\rVersionX

and restart the machine or the TeamViewer service.