Standalone Blast Issue

Dear all,

I have recently installed blast-2.2.26 on my machine (running MacOS 10.7.3) and I tried to perform a BLAST search using a single protein sequence as query and a formatted (by me) database containing all the proteins of Saccharomyces cerevisiae 288c.

I am getting the following error:

ERROR: Number of database sequence to show alignments for (B) [lastp] is bad or out of range [? to ?]

Any good ideas?

Thanks in advance.