Hi,

I'm trying to debug a orchestra that keeps crashing with this error message:

Csound tidy up: Segmentation fault
 *** internal error: mfree() called with invalid pointer (0x84cdb40)

The orchestra is being used in realtime and the error seems to happen
when a UDO is called by a midi triggered instrument. I simplified the
UDO in order to debug it so it just asigns a value to a k-rate
variable (originally the UDO would do operations on tables) and the
only change seems to be that the crash happens after a larger number
of instances of that instrument are triggered. If I comment the call
to the UDO then it stops crashing. The whole project is large (several
instruments, over 30 tables, lots of PV processing) so I wonder if I'm
hitting some limit here. I have 2 gigs of RAM and the system reports
using only 21% of it.

What could be the cause of such invalid pointer error?

Thanks,


Hector