that is a very strange problem indeed. one that i haven't come across yet.

which version of VST are you using? the latest one is here (i think).

so you are able to move seeds from the game to VST, but not from VST back to the game?

did it ever work and just stopped working one day?

are you trying to moving seeds back and forth in the right slot (there are six slots i think).

do you know how create and post screen shots?

maybe go through the steps you are doing to move the seeds (what you are clicking and what happens each time you click, in great detail).

where did you buy the game from? i suppose it is possible that some vendors inadvertantly have changed the format of the save game file so that it does not work with VST anymore. probably not on purpose but as a side effect of their copy protection method.