For whatever reason, SAP doesn’t put obvious information like “Xcelsius 2008 Service Pack 2″ on its About screen.  Instead, you need a secret decoder ring to determine the version.  Fortunately, the Xcelsius folks at SAP have placed this information in the Release Notes documentation, which is available on the SAP Help Portal. I’ve recreated it here for easier reference.

Xcelsius Release Xcelsius Version Build Number
Xcelsius 2008 (RTM) 5.0.0.99 12,1,0,121
Xcelsius 2008 SP1 5.0.0.99 12,1,0,247
Xcelsius 2008 FixPack 1.1 5.1.1.0 12,1,1,344
Xcelsius 2008 SP2 5.2.0.0 12,2,0,608
Xcelsius 2008 FixPack 2.1 5.2.1.0 12,2,1,6
Xcelsius 2008 SP3 5.3.0.0 12,3,0,670

“Starting with the release of Fix Pack 1.1, the “Xcelsius Version” number will
correspond to the Fix Pack numbering structure noted above. The version
number will be structured as follows: [Product Version].[Service Pack
Number].[Fix Pack Number].0.”

A similar helpful resource for Crystal Reports can be found here.