I am new to C2C. The game itself runs without much problems (sometimes I get a random crash but it is possible to avoid it after loading autosave) but I get a crash every time when I try to open WorldBuilder, even with an initial autosave. My system is: Win XP PL SP 3, Intel Pentium III Xeon Core 2 Duo 2.93 GHz, 3 GB RAM, NVIDIA GF 9500 GT with 1 GB RAM. I play at 1280x1024 with Medium graphic settings but crashes occured also when I changed them to Low. S. Edit: Of course, I play C2C v. 26 with the latest patch and BTS is patched to 3.19.