I am using InfoPath Designer 2013 to develop a custom form for a library in a SharePoint Online site. The form is in development, so I published it to a test site. One day when I tried to republish the form to update it, the form failed to publish, and InfoPath gave me an error message that seemed to have missing text:
I thought that I might have inadvertently changed some setting on my form to cause the error, so I created a very simple form from scratch (just fields for first name and last name) and tried to publish it. I received the same error, so I spoke with the site administrator, who gave me a different test site to use. I was able to publish my forms to the second site, so I used it for testing but continued to try publishing on the first site. After about a week I was suddenly able to publish any form on the first site again (I have no idea why).
For about two weeks I was able to publish without difficulty, then a couple of days ago I began to receive the same error message for any form I attempt to publish on either of the two test sites. When I run the InfoPath Design Check, it says there are no errors, but I receive the error message for any form I try to publish. I don't know what to make of the error message, but it looks like the body contains the word "InfoPath" oddly separated onto three lines with the "h" missing.