Call to undefined function dsm()

Whoa! Be very, very careful upgrading to 2.x. I'd highly suggest not using it unless you're a developer. dsm() is a function provided by the devel.module for outputting debugging messages. If you're just interested in testing out the new version, just comment out that line or delete it. I've removed it from my local version but I have several pending changes that need to get finished before committing.

i have the same issue, it fed up my site

any help?

I removed the line that contained the dsm() function call (it's just debugging output). The new archive that will generated tonight should fix the problem. However, I'd like to re-iterate that the 2.x version DOES NOT WORK. So I'd recommend not using it anyway, there's a good reason why the 1.x version is still the recommended download.

i disabled the whole module for now, can i just overwrite the 1.0 version over 2.0 version?

You'll need to disable then UNINSTALL the 2.x version (admin/build/modules/uninstall) before re-installing the 1.0 version, since the 2.x version makes database updates that prevent the 1.x version from working.

but when can you fix it sir?

When will you fix the issue