oclHashcat64 stuck on "Generating bitmap tables..."

[Mem5]

I get the same issue.
Win 7, HD 7970.
On my box it stucks with :
- MSSQL 2000 (-m 131), huge wordlist (12go) no rulefiles, allow raw dict attack.
- MSSQL 2000 (-m 131), small wordlist (300mo) + best64.rule file
BUT works with :
- MSSQL 2000 (-m 131), small wordlist (300mo), no rules.