Changing frame directory (still) does not work

[JakubChecinski]

Indicate the dataset
Example 0200 nm

To Reproduce
Steps to reproduce the behavior:

1. Load data
2. Set two widgets for an animation (I used a matlplotlib and a 3D_Cubic)
3. Set frame directory to some new directory -> confirmation window appears
4. Use player to record images
5. The images are recorded in main folder / Screenshots instead

Additionally, I noticed that the recorded images are divided into two separate folders - one ("Canvas0") for matplotlib images and another ("GL1") for 3D_Cubic. Maybe it's intended.

[LemurPwned]

Separate folders are intented.
Frame directory has to be set before adding widgets to record, otherwise it will take no effect.