Hi Paul,
This line throws Error 2, "File Not Found signal", AfxGetWinErrMsg: The system cannot find the file specified.:
frmMainJ.btnJsave.Enabled = True
No error just before this line and Error 2 just after it.
This line doesn't throw an Error:
frmMainJ.btnJsave.Enabled = False
Upon further review, it turns out the subject button was the only button control on the form that was both being Enabled programmatically and had an image attached to it. No errors once the image was removed from the control.