Andrea, OK you can ignore the last email -- we finally generated the same errors on Leap (had to find a computer with an Nvidia board!) so we can hopefully fix it here.

In the last release I have the following errors (on terminal) at startup:

BC_Signals::x_error_handler: error_code=8 opcode=154,31 id=0x111
BadMatch (invalid parameter attributes)
BC_Signals::x_error_handler: error_code=172 opcode=154,26 id=0x3400002
GLXBadDrawable
BC_Signals::x_error_handler: error_code=182 opcode=154,32 id=0x3400002
GLXBadWindow