Slicing creates errors duplicated on printed item

I have a model I designed myself I'm trying to print. But when it is being sliced, holes are introduces which seems to come out on the print too.

Attached is a screenshot of the prepared zcode, a picture of a print result (the vertical one) and the stl file. When I choose to print the vertical (with support) it creates support to support what is basically the "flowing" upper part - they are simply not attached.

Can anyone help me and tell me what the problem is here?

That is strange! Happens here too and I tried adjusting he file

Here yo go.. It had one gap in it..Fixed it. :D

To help you figure out what went wrong with your drawing, here is where the error is. Red line is the gap. Hope this helps.8HuGXV.jpg

Thank you!

I have some idea what is wrong with the file then and how I might be able to fix it in the original file.

What application are you using to see and fix this? It might come in handy for me in the future.

Spaceclaim