Error Diagnostic Information

An error occurred while evaluating the expression:

#getPeriodLength("fr",data.startDate[idx], data.startTime[idx], data.endDate[idx], data.endTime[idx], data.dateList[idx])#

Error near line 141, column 41.

Parameter 2 of function DateDiff which is now "" must be a date/time value

The error occurred while processing an element with a general identifier of (#getPeriodLength("fr",data.startDate[idx], data.startTime[idx], data.endDate[idx], data.endTime[idx], data.dateList[idx])#), occupying document position (48:77) to (48:198).

Date/Time: 02/09/12 05:12:04
Browser: CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
Remote Address: 38.107.179.230
Query String: action=view&type=training&cat=external&item=magie-photolecture&language=fr