Hi Jochen,

I noticed an annoying bug with the cave ref point jumping from UTM ref to Geographical ref (X=0, Y=0) without changing the projection type.

I use UTM and seal level as regular settings. I have some contours imported and displayed in perspective mode.

I managed to reproduced the error and here is the routine that should help you tracking some of the weird behavior:

First ensure Plan mode is selected in Visualisation. then Data> Calculate and go back to Visualisation/Plan mode. you can check the cave position using the grid in Drawings... it should be the correct UTM position. Then select Perspective mode, everything should still be ok and the coutours in the right place. Then go to Data and straight back to Visualisation. The cave position has then jumped to 0,0,0... but not the contours position nor the projection type (still UTM)
To get it back to the right position: in visualisation select Plan mode, go to Data > Calculate, then back to Visualisation, then select Perspective.

Did you manage to reproduce this issue?

Hi Jochen,

It seems like the stability issue is fixed, no more erratic changes, but there's a new issue:
My gml contours files are definitely created with UTM coordinates, however, when I select UTM Grid mode, contours and caves are far apart. When I select Geographic, then contours and caves are together.
It looks like there's a mix up between UTM Grid and Geographic modes somewhere in the code.