Thank you for your post. We have located the issue and created a bug report for it. The issue will be fixed in our next release which is due for November 25th. We have provided with a work around below but If you have an immediate need for this fix for a customer, please let us know.
Here is the description of the issue and a temporary fix:
Issue: Lucene confidence score is returned using "," as decimal point instead of ".".
Description: Lucene is using the system regional settings for decimal points. A possible score may be "75.24". If the operating system is configured to use "," (comma) for decimal, the score is generated as "75,24" by lucene and this creates and error message for "generateConfidenceScore" class.
Long term fix: The bug report has been created and marked with high priority.
Short term fix: Change the system regional settings to use "." (period) to use for decimal digit.
Ephesoft Support Team.