posted this on October 31, 2011 04:49 am
We have recently disabled the ability to upload xls files. This was done due to the inconsistency of the quality of the conversions, and very limited use of the feature. Also, since xls margins can be wider than a single page, the layout may not appear ideal.
If you need to upload a file that is in an xls format, you can convert it first into a PDF. This can then be uploaded to your account.