Archived:SIP Plug-in cannot be used with multiple SDKs (Known Issue)
The SIP Plug-in for S60 2nd Edition can be installed on top of only one S60 SDK at a time.
If multiple SDKs (for example, S60 2nd Edition, FP2 and FP3) are installed on the same computer, the SIP Plug-in installation fails if it has already been installed on another SDK.
No known solution. If the SIP Plug-in has to be changed to another SDK, it must be removed first.