Challenge
When attempting to upgrade Backup & Replication from 5.0.0 to 6.0.0, an error occurs stating you need at least version 5.0.1 to upgrade.
Cause
To perform upgrade of Veeam Backup & Replication to version 6.0.0, you must be running version 5.0.1 or 5.0.2
Solution
To resolve this, please use the following links to upgrade to version 5.0.2.230, then perform the upgrade to version 6.0.0
x86 version:
http://download2.veeam.com/veeam_backup_5.0.2.230.zip
x64 version:
http://download2.veeam.com/veeam_backup_5.0.2.230_x64.zip
More Information
Please see the licensing Article for further information related to your product and upgrading.
http://www.veeam.com/kb_articles.html/KB1191
http://www.veeam.com/kb_articles.html/KB1217