[Plugin: NextGEN Gallery] Problems with NextGEN after upgrade to 2.7

Hello,
I have upgraded my WP to 2.7 version.
Also, later – the NextGEN plugin.
Now, once I try to upload a photo to the post I have following issues:
– 2 windows (apparently old and new versions??) for the upload are popping up, overriting each other –
– once I try to upload ‘from computer’ – the red cross is appearing i/o photo. (same goes both for flash and simple browser)
– I can only upload a photo from the existing nextgen gallery (I need to add it separately first and the photo appears without the ‘frame’ and comment under the photo.

I would very much like to solve the problem with NextGEN and again be able to upload photos in the ‘normal’ way. HELP ME PLEASE!!

Thanks in advance!

p.s. my blog url is: https://www.wwomenglobally.com/