Hello Everyone,
I've spoken with LHR/CarveWright. The mpc's were not altered from the original 1.150 format that they were created with - apparently it was a compiling issue when the downloadable files were created, and will be corrected shortly (if not already)!
I was told that as soon as they became aware of the problem, all their resources were immediately focused on the investigation and correction of the issue, so they were on top of it right away - even before I spoke to them.
Steve - there have indeed been situations where the most current version of the Designer software was required to run a project (this was particularly true when we made the transition from the 1.12x series to the 1.13x series). The safest way to assure a project runs correctly is to update the software to the most current version. I, like you, also prefer to keep an older version active (at least for awhile) using the method I described earlier for any "just in case" scenarios. So, you can basically have the best of both worlds - an older version for running your older projects (if you wish) and an up-to-date version for running the most current projects.