I re-ran the installation process through the terminal. This is the result. charlie@charlie-desktop:~$ cd ~/ACT charlie@charlie-desktop:~/ACT$ wine Setup.exe fixme:atl:AtlModuleInit SEMI-STUB (0x996c860 0x996b500 0x9920000) fixme:ole:TLB_ReadTypeLib Header type magic 0x00905a4d not supported. err:ole:TLB_ReadTypeLib Loading of typelib L"C:\\Program Files\\ACT\\ActEmail.exe" failed with error 0 fixme:ole:TLB_ReadTypeLib Header type magic 0x00905a4d not supported. err:ole:TLB_ReadTypeLib Loading of typelib L"C:\\Program Files\\ACT\\ActEmail.exe" failed with error 0 fixme:ole:TLB_ReadTypeLib Header type magic 0x00905a4d not supported. err:ole:TLB_ReadTypeLib Loading of typelib L"C:\\Program Files\\ACT\\ActEmail.exe" failed with error 0 err:ole:CoGetClassObject class {17580e5f-7b07-11d2-bf1f-00a024d73444} not registered err:ole:CoGetClassObject no class object {17580e5f-7b07-11d2-bf1f-00a024d73444} could be created for context 0x1 So, I guess the installation was not actually successful, but I dont know how to fix it.