Got "Error reading the map file" error when I selected the map from the map browser in-game. Tried opening it in the editor, worked fine. Tried saving it but got a lot of compile errors.

I tried with Warcraft version 1.31.

All 1.21(b) maps should be resaved with newer patches.

Yepp, I see :/

Then I need to ask for help.

Can someone please do the resave job for me as I have some serious technical problems on my pc right now.

I tried, but I am getting compile errors. I don't know any JASS but I am guessing you are using some depreciated natives.

@BizzaroFukuro knows how to fix these JASS issues. He did it for a campaign.

Is there any possibility to add some screenshots?

This needs fix as mentioned before. Until then, set to Substandard.
Also, needs a credits list.