AutoCAD VB :: 20MB Dvb File Crashes Randomly

I just finished 'updating' my VBA code developed over the last 10 years from 'VBA 6' to 'VBA 7'.  When i view the code in the IDE of AutoCAD 2014, everything shows up fine -- no errors.  All of the references i need do exist:

Visual Basic for Applications
AutoCAD 2014 Type Library
Microsoft Forms 2.0 Object Library
Microsoft Scripting Runtime
OLE Automation
Microsoft Shell Controls and Automation
AutoCAD/ObjectDBX 19.0 Type Library
Microsoft ActiveX Data Objects 6.1(or  2.7  or  2.8)

When i goto Debug-> Compile, it 'compiles' without errors.  But when i go to run it, it will crash.  If i put in a breakpoint, and step through it, i can identify a subroutine that it crashes on.  But if i do it again and step INTO that sub, it runs fine.  If i have the code just continue on, it will crash somewhere else.  Basically for the most part, if i run a macro and have a breakpoint right away, i can put my stapler on the F8 key and just sit back and watch it run (although a 10 second process turns into about half an hour) -- it gets much further along but will still eventually crash.

By the way, the same basic code runs fine on 32bit AutoCAD 2012 (with the appropriate references changes as well as no 'PtrSafe' or LongLong or LongPtr usages)