We just released an update to CPAS, version 1.6-5018, available immediately via the download page. This release fixes two issues:

• Extremely slow FASTA loads on SQL Server (Issue #2143)
• "Invalid Email Exception" when attempting new user verification (Issue #2135)

If you've upgraded to CPAS 1.6 and are not experiencing either of these problems then there's no need to upgrade your installation.