I have two identical 'ftp' files. I ran a comp and the file compare okay. When I load one of the I get the 'Unrecognized file type' Now the first file was created from a text field from a SQL database and the second one was create through 'Save Properties' option. It appears that the first file loads all of the options, but it generates the error.
I haven't had any other problems storing the properties in a text field and then retrieving and loading them. The only difference with this one is that it contains client certificate information.