The blurb for AbiWord says:
Portable AbiWord ... has the ability to read and write a number of document types including Microsoft Word, Word Perfect, OpenOffice.org, RTF, HTML, Palm and more.
I've downloaded it, and it doesn't seem to recognise .odt as an extension. I've tried using "open with" on a .odt file, and also selecting "all files" from the "open" menu in AbiWord itself, but both times it just made it crash. How do you make it open .odt files, if it really can? That's what I've downloaded it for.