The Prism 4 script command "Paste 0 1" pastes into the first data row rather than the column titles.

If you are pasting a single word, it correctly pastes into the column title.

If you have multiple words demarcated by quotes, Prism 4 doesn't paste correctly.

Prism 4 also doesn't paste correctly if  you are pasting a number from the clipboard -- it pastes to the first  data row. 

The work around is to always paste single words (use hyphens to  combine words) and never use script commands to paste numbers into column titles.

Both these problems are fixed in Prism 5.