Like I said, since there isn't a 'server' that can process those joins, the machine has to allocate most of the resources to CR and unfortunately, that might be hovering around the 1.5 GB mark at which point most applications seem to break.
If you take the error message at face value, you could try cleaning up the temp drives and hope that'll help. However, if it doesn't then, like I said, there isn't much you could do other than looking for a database server.
-Abhilash