Version 1.4 of Envision may display an error when opening the Group Stats report. This is due to some of your member birthdays being entered as future dates. Sometimes, when the actual birth year is unknown, it's common to let it default to the current year. This results in ages calculated as negative numbers. This confuses the age range pie chart on the Group Stats report, resulting in this error.
To work around this, locate all members and visitors with birth dates that are in the future. Either change the year portion of the date to the actual birth year or use a number that's at least one year in the past. For example, use 2003 instead of 2004.
This issue will be fixed in future upgrades. In those versions, it will not be necessary to avoid using the current year.
