ok, this issue is really starting to get on my nerves

Yesterday I was programming a brand new MX-850 (w/the latest client software, updated as of yesterday) ... created an MXF file from scratch (I did import MXD device files, but no macros). The first 2-3 downloads to the remote went fine. Then on the next one this damnable error suddenly came up ... remote locked and was completely unresponsive (even to a reset), as is typical with this error; had to pull the batteries in order to get it working again.

I reset the remote and the next download worked ok; then the one after *that* AGAIN caused a lock! In the course of getting the programming right, I must've run into the error message four times ... and with a completely brand new, created from scratch MXF file?!?

Has Universal Remotes even acknowledged this problem? If so, what's the story, why is it taking so long to resolve (it's been happening for years, afaik?!?)