Since upgrading to the latest version I get either "Parse error: parse error, unexpected T_DNUMBER in /home/wtwiki/public_html/pmwiki.php on line 1029" or a lot of code displayed as text. The site had been working fine under a previous version of pmwiki (but had been subject to severe spam which necessitated the upgrade).
Apologies if this is a mistake on my part rather than a bug
It's this line of code that is causing the problem in various versions I've tried re-installing since having this probelm:
$ipage = RetrieveAuthPage($iname, 'read', false, READPAGE_CURRENT);
Closer investigation reveals that the problem is that $ip is being replaced with an ip address when I save a file on the web host. It's an issue with the editing software, not with pmwiki.