I believe that you must run the script from the workstation not while you are in the books. In the workstation with no set of books open, right click then select Tools, Script Evaluate. Find the script in the location described by Martin in the previous post (database_id_set.qw_script which is located in C:/NV2/NV20.exe/System Note: C:/NV2/ is the NV2 installation folder/directory. Substitute this path tp where you have installed NV2. For example, if installed in N:NV run the script database_id_set.qw_script which will be found in: n:/nv/nv20.exe/System). You will then be prompted for the location of the database you wish to reset the ID for.