Modding stock maps Options

[FrizzleFry]

I am having trouble modding the stock maps in MOHRADIANT. I convert the bsp file into map format and then load the DM map and everything looks good i just add a few items and i am done. I save the map file and then i use the mapbuilder (compiler) and plug in all the source file folders and when the C:/ promt comes up it scans through all the planes and stuff and then it hangs up on a couple of lines and says: Warning texture for object not found and then the program just stops and i am left with a mapbuilder icon next to my map file. I can use the tutorial and make my little 512 x 512 map and load it into my pak5.pk3 folder and actually play it but the whole modding the stock maps puzzles me. Any suggestions??