First this wp-installation of WP is dirty but since I needed api key for domain I guess I cant test in more clean environment. Why hold back I say!
So there seems to be a JS error every time a feature is activated.
TypeError: m is null
Line 150 in father.js
I tested in IE9 where it goes:
SCRIPT5007: Unable to get value of the property 'scrollLeft': object is null or undefined
father.js, line 150 character 437
Some feature do not work like draw. After selected pencil or circle it seems to be invisible. No action on image. Same with text though input box does show up. Text is unreadable, as if font is wrong? See http://imm.io/zwUb
Also if I select default extension images are saved a TXT files, http://imm.io/zwUQ Seems to work when set to PNG and JPG. Columns are not normal due to a Admin column editor but should not matter.
I think all this has to do with the JS error even if some features like crop and effects work.
Also a feature request. If you have 100 items in media library you have to scroll way up to get to window. May be you could add an invisible or auto- "to the top" feature. It got me even after I figured out where window was, heh.
Hmm I checked with Firebug. Input box for text is set to only 20px with font size 20px. Well that can be fixed with own CSS if required. A bit of padding for
#avpw_text_area etc. and text become crystal clear. Just weird CSS defaults - worse is no action when clicking "Add text".
Hmm2 - I disabled WP Jump Menu and suddenly I could add text. New image and then I could not. Same errors. Can see where this is going. Will post once I have excluded everything. Well if script is sensitive to other plugins JS it might be worth mentioning anyway.