Is not possible output more pages on single file TIFF or JPEG for page!

I have installed the last version 0.9.9, and I have found this problem:

 If I select Jpeg output for a document with more then 1 page, it create only one page with %d as last part of the name, and the page in not opened from the default viewer.

 If I config "Document" - "One page for file", and then select TIFF output for a document with more then 1 page, it create a multipage tif (instead of one for page)  with %d as last part of the name, and the page in not opened from the default viewer.

 Is there any other parameter to config to solve this problem, or is it a bug?

 Ca someone help me?