Program resetting tolerances.

[ChairsWithWheels]

I'm using PC-DMIS 2016 CAD++ and randomly throughout a program my tolerances are being reset to +0.0000, -0.0000. I'll fix them then when I run the part again they go back to what they were before. How do you guys fix this?

[louisd]

you could 'lock' them by adding an evaluation (ex: 0.005+0 or 0.005*1). It's a workaround but it works 100% of the time.

[Quality ish]

Where would I add that? When I highlight the tolerance in the program, just enter it as you show?

[Ego Murphy]

You can only add the math by manually typing in the tolerance field in the edit window Command Mode.

You shouldn't have to - double check that you have the Workplane settings right for the dimension.

[ChairsWithWheels]

Thank you @loiusd, I'll try that.

[Roberto]

Are you running the demon with full admin rights?

[ChairsWithWheels]

I am not running PC-Demon in administrator

[Hi-Tech Redneck]

There has always been speculation that Nominals and Tolerances will do screwy things in programs that do not have all 6 DOF constrained in the alignment...

[louisd]

You NEED to execute PCDLRN.EXE as admin.

(Please note: in 2016.0 and newer “WAI” is Replaced by “Hexagon”)

Plus, you NEED to specifically have admin rights to the following registry paths:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\WAI
HKEY_LOCAL_MACHINE\SOFTWARE\WAI
HKEY_USERS\.Default\Software\WAI

Plus you NEED to specifically have admin rights to the following folders:
Windows 7 Paths
32 bit OS
C:\Program Files\WAI
C:\Users\Public\Public Documents\WAI
C:\ProgramData\WAI

64 bit OS
32 bit APP
C:\Program Files (x86)\WAI
C:\Users\Public\Public Documents\WAI
C:\ProgramData\WAI

64 bit APP
C:\Program Files \WAI
C:\Users\Public\Public Documents\WAI
C:\ProgramData\WAI

You NEED admin rights to all of the above (as applies to your system) in order to enable PCDMIS to run properly. I don't this is the cause to your dim tolerances being reset, but it's imperative either way.