Have you tried clearing you winfilecache .dat file? That findDynamicSources error seems like one that might go away with a cleared cache.
Errors when setting up a connection are usually because of the Site Settings and the Testing server url being configured improperly. If you continue to have problems I can work with you in a screen sharing session in order to figure out what is going on. Just reply with a US phone number or skype contact information in the private area.