Water block is always disappearing

[oloG]

What reasons can there be for this? It doesnt seem to matter how many blocks I add and it always disappears like the second time I load the map again.
Edit: Just to make it clear: Its a mixed waterblock in the air but it is only one where I have this problem.

[XT3]

is it in TM1 or TM2? IN TM2 you need to have a dirt block on the ground. This might help: viewtopic.php?f=44&t=1291

[oloG]

its TM1

[XT3]

mmm do you overlap the water blocks?

[paxiuz]

have you checked trackstudio to see if there's an invis block you wouldn't be able to see in normal editor ?

[oloG]

Im not that familiar with ts so Im not sure what you mean but I made some screens:

Here is the spot without water:
http://abload.de/img/nowaterxnpyn.jpg

Here with water:
http://abload.de/img/waterpeo1d.jpg

Here in ts (without water):
http://abload.de/img/waterts97pxj.jpg

I dont really see anything unusual, also in ts. Like I said it doesnt seem to matter how many waterblocks I add to this place.

[XT3]

I use to cover the ground where holes appeared in the map and covered them with dirt block.

Here is some Dirt Block tricks I use. The Same idea might apply for water.
viewtopic.php?f=44&t=981