GisLink refers to the technique used to create or modify add-in applications for Cadcorp SIS Desktop .
GisLink customisations can be written with any .NET development language. Cadcorp recommends Visual Studio as the development environment for Add-Ins.
SIS Desktop add-ins must be run in-process (as assembly libraries). Ensure you convert any existing out-of-process GisLink applications to in-process.
The applications need to be built against the architecture (x86 / x64) of the SIS Desktop.
Note: See Creating an "In-process" GisLink Application.