Reason #1 (99% of the cases) : First, do the obvious thing and check the task bar to make sure Investor/RT is not already running. Investor/RT can not run duplicate instances off the same database at the same time.
Occasionally, when diagnosing a problem, Linn Software support may request that you send your data_f folder contents to enable us to reproduce the specific problem. Some problems are very specific to the particular way a chart or some other object is defined. Please do not email your database to support unless requested. The data_f folder/directory contains 59 files that constitute the Investor/RT database. Since this folder's contents can often be hundreds of megabytes in size, sending the data_f by email is impossible, even after compressing the files.
(Also See: Database Backup And Recovery) (Also See: Tip: Keeping Your Database Size Minimal)
(Also See: Database Backup And Recovery) (Also See: Tip: Database Utilities)
You can potential reduce the size of your database by following the steps below. By reducing the size of your database, you will also reduce the time it takes to verify and backup your database.