At the top of the 'manage installed tools' page there is a filter that hides uninstalled and deactivated tools. Click 'advanced search' and then 'Deactivated or uninstalled'. Do you see your tool deactivated there?

M.

On Wed, Oct 19, 2016 at 9:49 AM Pierre Lindenbaum <pierre.lindenbaum@univ-nantes.fr> wrote:
On 10/19/2016 03:36 PM, Martin Čech wrote:
> Hi Pierre,
>
> It seems that instead of uninstalling you de-activated the repository.
> I would uninstall the repository again.

      admin > manage installed tools > there is no tool installed.


Search toolshed > select > >> preview and install > "Install to Galaxy"
 > all unchecked / empty ; submit > ERROR


Pierre