Works for me, if the text tool is in message editing mode (ie, its small on-canvas dialog is visible). Otherwise, I do get the message you mention. n other words, you don't paste text into Gimp, you paste text into the input field of the text tool.
Btw, since you mention using OpenOffice, don't expect the formatting (fonts and such) to be copied, the only thing that is copied is the raw text. If you need fancy text formatting, do it the other way, prepare images in Gimp, and insert them in an Office document.
Btw, since you mention using OpenOffice, don't expect the formatting (fonts and such) to be copied, the only thing that is copied is the raw text. If you need fancy text formatting, do it the other way, prepare images in Gimp, and insert them in an Office document.