Fatal error: out of memory?

[otto2_]

Just recently I've begun using Autocad LT in an office with 5 other machines that are on older versions of Autocad. Suddenly two machines with the older versions are displaying "Fatal error: out of memory" and crashing Autocad when opening certain drawing files..

It seems the files are ones being opened by the LT user, and it is somehow making the files too large to open on the other machines.

What might cause this? And how do I rectify it?

Is this a resolution increase perhaps?

[RobertB]

You may be unintentionally upgrading AEC objects even though the DWG format is the same between the two versions. The older version's AEC object enabler might not be able to gracefully handle the newer objects.

Time to get everyone to the same version of AutoCAD.

[otto2_]

Could I install an Object Enabler on the old versions that would let it correctly read the newer version by LT?