BigIP Report Old

Hi. We've been running bigipreport-4.3.8. Because we've built an app that uses the json files from this tool, we cannot upgrade to the latest on this particular server. This has been running well for over 2 years now. Suddenly we are getting errors. The error is: "Exception calling "get_list" with "0" argument(s): "There is an error in XML document (14, 29)."". Suspecting it had something to do with the config, we dropped it down to only talk to one F5, but always the same error. I found a ManagementProvisioning script on devCentral, so I tested that. It still throws the same .xml error, so it doesn't have anything to do with the bigipreport script, rather it seems like it has something to do with the iControl library. I've been stuck on this for days to no avail. Any ideas? Any help will be greatly appreciated. Thanks.