Okay, we managed to fix this by modifying your plugin a little bit.
It seems to be a scoping issue that relates to how the $outfitters_config variable is declared. By including "global $outfitters_config" before declaration in config.php and then after including config.php in OutfittersLicense.php (multiple instances) it validated fine.
I don't know why this is happening if this (presumably) used to work fine unless PHP fundamentally changed something in one of the 5.3 releases - I don't do enough PHP dev to say for sure.
Would be interesting to hear your thoughts on this in case there's a knock-on effect that may affect the rest of the installation.
Hi there. We are able to reach your server just fine using the method you described above, however this error still persists. There is no firewall blocking, nor is there a problem with SSL certs.
Any other ideas as to how to fix?