Simple DNS Plus v. 5.2 build 131 is now available at http://www.simpledns.com/download.aspx.
This release includes the following bug fix:
- Fixed: Did not always include OPT record in larger response packets to EDNS0 requests. This would cause DNSSEC validation errors with some systems.
Generally, this situation will only happen if you use DNSSEC signed records, and only with large DNS responses (for example if you have many MX or NS records for the same name).
You only need to update if you are affected by the issue described above.