anything over 4.3 or higher should work. I have run Dokuwiki on PHP 4.4.0 and PHP5.
... I just went back and double-checked the Dokuwiki install guide, I noticed it says I need PHP 4.3.x. During gentoo's recent php reorg, I stayed with PHP4 rather than going to PHP5, but that .3 slipped by me. Should I go back to 4.3?
Does your template provide any non-standard js stuff? Same goes for your plugins.
Try disabling all plugins and switching to the standard template.
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