0xc0000005 Exception

[rodimius]

I have a button on a subform that when pressed updates a record, then
inserts a record.
I have used CurrentDb.execute for this.

Now as far as I was aware this was working fine, and I was working on
other things in the database, but when I came to enter some new details
I found that access was crashing with the 0xc0000005 error code.

The strange thing is, when I set a breakpoint in the code and step
through the problem area, the error doesn't happen and everything
happens as it should.
Could anyone shed any light on this?

I have tried decompiling but I'm not sure if I did it correctly as
nothing changed.

 

[rodimius]

I did a little more fiddling with the decompile switch, and it appeared
to work, but the problem remains.
The command I ran was <path to access> /decompile <path to mdb>.