Error 2147191858, The field name is not known, Single Report eMail Error.

Report runs fine in Crystal Reports 8.0 but fails in CRD V3 with the above error message/number. Fields have been verified as being correct.

Do you have a list of "special" characters not allowed to be used in CRD field names, like the single quote discovered earlier? Have inconsistencies been addressed by CRD V4? Is there any way to tell which field is being rejected?