I am using the getCustomImage and printCustomAlbumThumbImage functions in my theme which seem to cause problems when trying to validate for XHTML.

The problem seems to be a result of the ampersand character being used in the URL.

Check it out here:
http://s.angoulvant.net/

You can try validating by clicking XHTML at the bottom of the page.

Fixed.

I replaced the ampersands lines 258-261 of classes.php for function getCustomImage, by the code &.

Everything seems to work great however this should be fixed in the next release...

Oh nice, I'm glad my intuitions were right

@Stephane - Thanks very much for this, I was having the same issue. Great site BTW.

Thank You!