That control has had issues for a long time (OK, so you were lucky enough to have not experienced them) and it's only gotten worse with the changes to windoze versions and 32 vs 64 bit systems. Even seems there was an incompatibility with a security patch, and it was basically deprecated for 2010 version. At the very least, distribution was often an issue since ugly things could happen when some user didn't have the ocx at all, or it was in some different folder. At one time, there was even licensing issues if I recall correctly.
So I'd consider making the move to a custom calendar form which you create or use from someone else. There are at least 4 sources here in the 2nd paragraph, along with a bolded statement about why you might want to make this move...
http://www.devhut.net/2010/06/10/ms-...icker-control/
Last edited by Micron; 01-16-2017 at 10:05 PM.
Reason: spelin
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.