On Wed, 2 Jun 2021, JOSE FRANCISCO PERLES RIBES wrote:
 R version 4.1.0 (2021-05-18) -- "Camp Pontanezen"
 *Error: cannot add binding of 'vnum' to the base environment* 
This should now be fixed in the gretl snapshots. (Tested with R 
4.1.0 on Linux and Windows.)
Allin