🚀 go-pugleaf

I just stuck the .5 meg upgrade from E A Brown into my 520, bringing it
up to 1 meg.  Everything worked peachy, until I tried to recompile
something with Mark Johnson C, at which point MJ's assembler wedged up
totally.  Everything else works marvelously; the ram's there, the
ramtester loves it, I burned it in for an hour with no trouble, Uniterm
loves it, other memory-hungry programs love it, etc, etc.  The only ill
effect is the MJC assembler wedging when I load it up.

Has anybody ever seen any effects like this?  It seems pretty bizarre to
me that making more memory available would cause a program to die like
this, but that's what's happening.  I tried several backup copies of the
assembler, and the older version, but all do the same thing.

Any ideas will be much appreciated.