Why would that be if ya don't mind my asking?
Long answer: See the discussion
here.
(Trying to be) Short answer: It's a separate platform predicated on making two platforms not designed to coexist actually work together. The MCPC+/Cauldron folks (Blood & Co.) are pretty good with seeing if the problem's with MCPC+/Cauldron itself and dealing with it or passing it along if it isn't, but a number of mod authors tend to not take MCPC+/Cauldron reports very simply because that's not a platform they develop against. It's very hit-or-miss on if an individual mod author will even take the reports (for example, as you can see at the tail end of your log there both Tinker's Construct and Forestry notate that their authors won't take such reports).
More than that... have at that link. It's complicated and not necessarily a beloved thing, but it is how it is.
