So my computer seems to have them installed at:
Does that make a difference? Should they be in the other location you listed?
No, Accordance will treat these folders the same, I just gave the first one because it is the most popular. Most likely your Application Support folder is named Accordance because you upgraded from version 9 of the non Mac App Store Accordance.
Just tried to remove all four files. Launched Accordance and Easy Install. It said I could download and install them. However, when it went to install it gave me the error again.
This appears to be a bug in version 10.1.7.
Just to be clear, you are having trouble installing two tools with periods in thier name? (all other modules work).
I am working on submitting version 10.2.x to the Mac App Store, but we need to make sure this bug is fixed.
Sorry for the hassles and thank you for reporting the problems!