External Environment could not be started - CLR on Sybase's Interactive SQL

Question

I'm having an issue figuring out how to start an external environment within Sybase Central's Interactive SQL. The executable, dbextclr12.exe has not been manipulated since 2010, so I know I didn't accidentally alter that.

Here is the call:

START EXTERNAL ENVIRONMENT CLR;

I just reinstalled .NET 3.5 and repaired 4.0.

Could not execute statement.
External environment could not be started, 'external executable' could
not be found
SQLCODE=-675, ODBC 3 State="HY000"
Line 1, column 28
You can continue executing or stop.

How do I get the External Environment to run?

Answer 1

This was an issue with ODBC. A path was changed in SQL Anywhere 12. Sorry for the PEBCAK, everyone.