Error code 38 on entering cash shop

@Obelisk: My Hero had this glitch for at least a week before the auto-hp pouch expired.

@Jamie: Both my Hero and my Bishop have perma transparent hats. The Hero is blocked from cash shop, the Bishop is not.

It could be something we have in inventory, or some aspect of inventory (expanded slots?), but apparently it's not trivial.
It also seems to afflict high levels more than low, but that may be due to something high levels tend to be carrying around (charms?)

But seriously, eTracer told me at least twice that it succeeded in sending them its log file. Maybe it needs to start taking full crash dumps instead of just logs?

I have no charms. Haven't had them in months. Approximately 8. As for expanded slots, I have them.