Framemaker is constantly crashing when I try to edit settings for responsive html5, or when trying to publish. I get a critical error and have to close the program. Is there something that I should be looking for in my document it seems to hold happen to certain chapter of the book I am working with and sometimes it happens when I just open up Framemaker.
Unfortunately, what you've described so far is not enough (I think) to get a handle on your issue(s).
For myself, I've encountered issues (both with responsive HTML publication and other features) when my docs have included robust usage of conditional text, importation (by reference) of various file image types, Visio illustrations, and illustrator files, tables with conditional rows, etc.
You could also simply have a buggy installation (are you up to date with patches?)
You could have one or more things causing your problem(s). My suggestion is to work your way 'down' to the source problem -- something like this:
Not sure if you have figured out the cause, but I just saw this post and wanted to add that I had this same problem. For me, the issue was that I was trying to modify the mapping for my cross-reference formats, and one of my cross-reference format names has a backslash in it, like this:
heading \and page
Once I remove that backslash, no more crashes.
Along with jaggedpeak's excellent suggestions, you might also try renaming the preferences folder in your Roaming directory.
Here's my dir for reference
Change 14 to 14-renamed (or similar)
The 14 (for 2017 release) or appropriate dir for your version will be rewritten with default values, and may resolve your issue.
BTW, I find that the last two releases (2015 and 2017) are significantly more reliable than previous versions for HTML5 and other online format publishing.