We tried to upload a pptx document (powepoint 2007) to projectplace, but the upload failed. We tok the same document, and saved it as a ppt format file (powerpoint 2000). Then we managed to upload it to projectplace. Size of dokument is 64MB.
Re: From Projectplace Support- Files over 6O MB must be uploaded by single upload which you reach by clicking the link "Problems? Try the single file upload in the "Upload documents view". For Projectplace the filetype is not important.