List won't upload

[Anonymous]

I've tried uploading a list 5x now - the fields are correct and while some columns have the occasional missing value, it will not upload.  When I look at the reason why it failed, I am told that various coulumns have errors, however, the version I am uploading is actually error free. Thoughts? 

[Josh_Hill13]

Screenshot of the columns?
 

Might be worth asking Support as it shouldn't be a problem.

[Anonymous]

One thing I would suggest checking is if there are special characters in the file? This might be causing the error.