When i try to build my collection it crashes on 14% every time and gives me this output

terminate called after throwing an instance of \'std::bad_alloc\'
what(): St9bad_alloc
amarok: amaroK is crashing...
Very strange! got a DCOPReplyWait opcode, but we were not waiting for a reply!

i think it has something to do with my RAM but i have 512MB Ram.
I am now using amaroK 1.3.2 but the same thing also happend when i was using 1.2.4