This prompt occurs when you are using the user-defined functions feature of OPAL/Miner. It is caused by the macro security level being set to medium and only occurs when you open a modifiable database file with a .MDB extension. This is the case with the OPALMiner_Functions.mdb file and can be problematic when running batch downloads overnight. To eliminate these prompts, set the macro security level to low. You can change this setting under Tools -> Macro -> Security and select Low. Click Ok and a warning message will be displayed. Click on the Ok button. You will then need to exit and restart MS Access.