Hi, you don't have to change column names to Caps.Column length limit depends on database, but yes, there is a limit.
Since version 1.0.2.7 GeniusConnect is using
ANSI quoted identifiers:
SQL statements are generated using ANSI quoted identifiers.
Column/Table/View names with, for example space characters or reserved keywords, can be used.
When erros occurs, are you loading or storing items? if storing, please check also your SQL Statement for key generation.
(Mandatory keys button in Assign table dialog)