SGP 4.1 download still includes Lunatico GNS version 188.8.131.52 while Lunatico themselves distribute version 184.108.40.206 since at least 2020. Unfortunately the version currently still included with SGP does not work well with other Lunatico software.
Can you upgrade the with SGP included version of Lunatico GNS? Or better still: have SGP use the GNS version at a user defined location? Latter is already done for external applications such as PHD2 and ASTAP. This might then also prevent the issue where SGP automatically launches GNS at the start of a sequence, even when that was already launched previously by SGP for a sequence that has been aborted. Launching a second instance of GNS generates a conflict and accompanying error messages.