There is a known issue with Version 1.0.2 giving an error when trying to download the Math Constants:"Nullable object must have a value."
The math constants are by default filled with a NULL value, but the downloader expects a value for the Primary value.
This can be easily fixed by submitting this simple script through the Utilities->SQL Execution Tool:
update LogConstant
set PrimaryValue = '1.00'
where PrimaryValue IS NULL
We will also provide this script in the next release.