CRASHDUMP/CRASH ERROR MSG

Hi to everyone,
I m new to Cubase 8 and using it since 10days now without any issues,today it has appeared twice this error msg panel that advises to save the project and refer for troubleshooting I m receiving the following crashdump error code:
Cubase 8.0.30.536 64bit 2015.10.24 23.37.dmp

does anyone has a clue whats going on?this thing appeared while I was previewing bass editing in the vst bass.

if anyone knows please inform me.thx