Hello Martin,

the order of the data records in your GSI file appears to be incorrect. The required order is a standpoint record, followed by records representing the observations carried out from that standpoint. A valid file structure looks like this:

[STATION 1]
[OBS 1]
[OBS 2]
[OBS 3]
[STATION 2]
[OBS 1]
[OBS 2]

Came upon this bug when importing GSI data measured by total station:

Its not a bug but an invalid GSI file. Please correct your data.

/Micha