Perl execution failed Error On Backup

When I try to backup virtualmin gives me error.

Error - Perl execution failed

Backup failed - try again to a file on the server to see the full error message at /usr/libexec/webmin/web-lib-funcs.pl line 1397.

Webmin version 1.730
Virtualmin version 4.13.gpl GPL Theme version 8.7 Kernel and CPU Linux 2.6.32-504.3.3.el6.i686 on i686 Operating system CentOS Linux 6.6

Also I don't see any updates for weeks. For example didn't get update to virtualmin 4.13. I think something's broken?