Anyone ever have this issue?
To better debug SSH connection problems, remove the -q option from 'ssh' in the [tunnels] section of your Subversion configuration file. An unknown Subversion error occurred. (code = 210002)
I have not had this issue before. Without more information, it's hard to produce a solid answer. The best answer I can give is to edit your config file and look for the tunnels section and look for a line similar to this:
Remove the -q option from whatever entry is in the tunnels list. This should allow you to better debug the problem and provide more information about the cause.
Additionally, here is a resource on SSH Subversion configuration: