Toon Boom Harmony 12.2.0 Can't Draw Anything on My Project (Cursor being prohibition sign)

Hi mates
i’ve Toon Boom Harmony 12.2.0 but i can’t draw on Camera Tab or Drawing Tab anything. When cursor comes on these tabs, it’s being prohibition sign and don’t let me drawing anything. I installed three times but it didn’t fix. I researched everywhere no solve, no knows someone.

Please help me solve this. :frowning:

Graphic Card: Nvidia GTX980M with latest drivers
32 GB Ram
Windows 10

Look guys i captured a video about this problem. How can i solve this? Please help.