Freeze after Finding if Lock Folder switch is on

I am a new user to Directory Opus.
My Directory Opus ver. is x64

if Lock Folder switch is turn on
then Prog will always freezed after finding containing text.

I do that quite frequently without any problem.

Here's a short video; is anything I'm doing in the video different to what you're doing?

Do you only see the problem when searching within particular folders?

I got Error code 0xC0000005 on ver. x64 when Opus Finding containing text freezed.

This problem seems to be solved after I intsalled ver. x64.

thx for your help.