WORKAROUND:
Here is a workaround to avoid the crash because of “out of memory”.
How to find data folder:
1. Launch the SQL Optimizer for SQL Server
2. Open the Options window and Click the “Show Details”
3. You will see the data folder of Find SQL
Workaround
1. Find the data folder of Find SQL module (It is same as I mentioned above).
2. Try to remove all stuff in the data folder.
3. Launch SQL Optimizer for SQL Server and open Find SQL module
4. Add new task to collect SQLs from Plan Cache
5. Once how many SQLs in Plan Cache is detected, it will show a window to configure the collecting,
SOLUTION:
Waiting for a fix in a future version of SQL Optimizer for SQL Server.