I am getting this error when trying Switch Port Mapper. But in the documentation for the SRW2024 it plainly states Bridge-MIB is supported.
Granted this is a DEMO of Engineer's Toolkit, but I wouldn't think that would impact it.
dmel - There are two places to get the bridging information: RFC1493-MIB:dot1dTpFdbTable and the Q-BRIDGE-MIB:dot1qFdbTable. The 9.2 version of SPM only supports the first, whereas the latest (currently in beta) supports both. You might check what tables you device supports.