Error when trying to view preview saved edited masks or connect out node outputs

[Glidias]

Prompt outputs failed validation:
ImageToMask:
- Required input is missing: image
VFrame Loader With Mask Editor:
- Failed to convert an input value to a INT value: end_index, None, int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
- Failed to convert an input value to a INT value: start_index, None, int() argument must be a string, a bytes-like object or a real number, not 'NoneType'.
- 

Does this work with multiple instances of the node floating around across the same workflow and other workflows in other tabs, and the workflows across current and other tabs are very large?

Had to restart UI and redo mask editing again due to this. (with a completely new empty workflow). Not too sure how to replicate this exactly under what specific conditions. Seems like the data got "lost", and it happens the moment another instance of the node is used, pointing to a different directory i.

[Glidias]

Seems like after some editing, (eg. 2nd/3rd time saving beyond 1st) user might have to change the values of start_index & end_index back and forth (eg. from 0 to 1 and then back from 1 to 0) to get the node to work again. Seems like there is some default behaviour that failed to run again to convert "0" to a valid "please ignore this" value until invalidating the parameters.

[bruefire]

@Glidias
With this fix 711c9d2, it seems that newly created nodes are now functioning correctly.
However, the same issue still appears when importing older workflows.
I’m sorry, but I’m not yet sure if there’s a way to resolve that.

[bruefire]

It should work regardless of the number of tabs, the size of the workflows, or the number of SequentialImageLoader / VideoFrameExtractor nodes within a workflow, as long as system resources allow.