Recently some users of the system i support were experiencing this issues while trying to create customer,vendor or end users in the system.
Users could create the end user but when they try to add the address,they get the above error.
I resolved by adding the below code in DirParty class, method UpdateAddressFromDirParty.
Place this code right after the following line:
dataAreaId = conpeek(addressDataAreaList,i);
Please test the code before moving it into production system...
