The new update came in and would not upgrade to the latest version. The Update button is disabled.
2018-11-19 15:31:56,352 : New Update version '1.15.2.100.0-3rc' found for Elastica SpanVA going to download the installation package
2018-11-19 15:32:03,327 : Couldn't decrypt the signed SpanVA update package. Will download update package again
SpanVA updates from the previous version to the latest version are always available. When SpanVA falls more than one release behind, updates are only available for specific time windows. Also, any update behind version 1.15.2.100.X requires a manual certificate update that can only be performed by engineering.
Open a ticket with support. Once the SpanVA is at the latest version, it is recommended to enable Auto-Update.