This PPA adds a reference check to avoid a similar invalid memory situation, and so might solve this bug as well. Please report back whether it fixes your issue or not.
If you have NOT been able to reliably reproduce the crash recently (within the last day or so), you don't need to install the PPA, and don't need to comment here.
While the error message differs, this might be a dupe of or related to bug #711422
If you are able to reliably reproduce this crash, please install the following PPA and run it for a day or so:
https:/ /edge.launchpad .net/~raof/ +archive/ aubergine
This PPA adds a reference check to avoid a similar invalid memory situation, and so might solve this bug as well. Please report back whether it fixes your issue or not.
If you have NOT been able to reliably reproduce the crash recently (within the last day or so), you don't need to install the PPA, and don't need to comment here.