I made a big model of a bridge, and last night added lots of texture to it.
Tonight I decided to retexture it, so I made a large brush over the entire bridge(only thing on the map) and used "select inside". Then I apply caulk texture to everything. Then when I click on the 2D map, MOHradiant crashes.
MoH Rad is a memory hungry little bastard - sometimes when doing complex operations it will just decide to give up the ghost and crash - try doing the bridge in smaller sections - there will (hopefully) be a better version when they release the full SDK (pray for some time soon)