I'm trying to save one of my maps in SRB2 Doom Builder and when it's trying to build the nodes, it's giving me a message "Run Time Error '5'; Invalid procedure call or argument." Afterwards, it erases the map from the wad. I tried saving the map to a new wad, but it gives me the same message. After the message, SRB2DB crashes. Is there anything that I can do to stop this from happening. I have to start over on one of my levels because of this.