[Resolved] preg_match() [function.preg-match]: Compilation failed
I just installed a fresh WordPress and added NextGen gallery (v2.0). I have permalink enabled (day and name). On activation I got the following error:
Warning: preg_match() [function.preg-match]: Compilation failed: unrecognized character after (?< at offset 5 in /…/public_html/bla-bla-bla.com/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/router/class.routing_app.php on line 484
Any ideas how on fix?
p.s. This WP uses an AddOn domain connected to the same hosting as my other, main WP site. WP sits in root of this domain which points to /public_html/bla-bla-bla.com. This is NOT a multisite setup, two installation are not related at all.
p/s/ The main WP site uses NextGen (1.9.xx) for quite a while and I never experienced problems there. It might be related to 2.0 major update.
p/p/s/ changing to default theme does not change anything.
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NextGEN Gallery by Photocrati
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