Allin, Sven
Thanks for looking into this. As I said csv, rtf and text all failed. So I will look to see if a clipboard in another app running in the backgr5ound (eg Mozilla, Gmail, Excel)might be interfering, although I did clear the Windows 11 clipboard.
Failing that I will try an earlier Gretl version and hope for the best
Brian
On Thu, Jul 23, 2026 at 12:42 PM Sven Schreiber
<sven.schreiber@fu-berlin.de> wrote:
>
> Am 22.07.2026 um 18:47 schrieb Brian Revell:
>
> Gretl error Cannot open Clipboard
>
> It gives same response no matter what file format requested , or even if highlighting and copying using Ctrl + C as opposed to Edit Copy
> Pretty serious when one wants to paste fitted / forecast values into a spreadsheet for further modelling use without laborious copying the screen display.
>
> Any workarounds ?
>
> I cannot confirm this problem on Windows 11 with the latest snapshot (July 11th). Copy to RTF or plain text works OK for me. Haven't tried on 2026b yet.
>
> Given the other problem with data editing in Gretl 2026b is also proving problematic using the GUI, any chance of being able to redownload 2025c or whatever was the latest version last year until 2026b is cleaned of bugs, might there be a workaround.?Clearly a screen dump is no help in that the data shown will not be transferable into other apps other than as a jpg.
>
> All earlier releases are available on Sourceforge. https://sourceforge.net/projects/gretl/files/gretl/
Like Sven, I have tried to replicate this problem with the current
gretl snapshot on Windows and couldn't do so: copy and paste worked
fine from an armax forecast window (both plain text and CSV).
On Windows, "Cannot open Clipboard" means that the Windows API
function OpenClipboard() failed, which happens if another window has
opened the clipboard and not yet relinquished it. I suppose it might
also be caused by rogue behaviour of a Clipboard Manager other than
the built-in Windows one. Anyway, the gretl code dealing with the
clipboard on Windows has not been changed in a long time: this is not
a newly introduced bug, and I don't think it's a bug at all.
Allin
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