Fuzzy Lookup using existing index failed

Hi All,

Please help me to check on this fuzzy lookup issue.

[Situation]

I have selected to store and maintain index for first time, it works fine (just input 4 variables and look-up from table which contains1 million records). After execution, I altered the option to use existing index to do the same thing but receive the error msg.

[Environment]

SQL Server 2012 RC0 env. & SSDT development env.

[Error Msg]

[Fuzzy Lookup [111]] Warning: Catastrophic failure
[SSIS.Pipeline] Error: Fuzzy Lookup failed the pre-execute phase and returned error code 0x8000FFFF.

I try to reduce my look-up table into 500,000 record, and it works fine by using existing index, but I don't know why??...

Should I change any settings about memory allocation(I set MaxMemoryUsage to 0)? Or may be aboutRC0 issue?

I have changed WarmCaches property to False but not works.... could anyone give some suggestions?

Thanks in advanced.

BR,

Jack