running oracle code on asp.net website causes "driver missing" error

running asp.net mvc website that has code that connects to oracle. Works fine on one machine but on another, I get the following Error:

System.Data.OracleClient requires Oracle client software version 8.1.7 or greater.

Here is the line of code that it breaks on:

OracleCommand command = connection.CreateCommand(开发者_Python百科);

This machine that is failing does have the 10.2 version of the oracle driver installed on the machine. Any suggestions on what could be wrong?

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Found the same problem (and possible solutions) on asp.net