BLAST Database error pre-fetching sequence data

The blast version requirement need to be changed from >=2.9.0 to >=2.12. The issue comes down to a change in the blast DB format. NCBI updated their default DB format from V4 to V5. blast 2.9 was the last version that read (and wrote) V4 by default (optionally it would read/write V5). From version 2.11 V4 support is dropped all together. As a consequence of blast version requirement >=2.9.0, some instance of ICEscreen tends to exhibit an error upon installing with conda : BLAST Database error pre-fetching sequence data.