You mean a server.Try downloading this truck, it's the only one I found. That may resolve the issue.
the file is always dev/blockland/trunk/engine/dg1/bitmappng.cc its ALWAYS that file.Please, somebody give me a solution or a download to that file!
Torque has some problems reading PNG files encoded in a certain way. This shouldn't happen with any of the default PNG files, and any files you see causing this should be sent to Badspot for brown townysis.