stock reduces by 2 for each single item sold - using XPOS plugin

[daihlo]

I have community 1.9 running XPOS till plugin

if an item is 1 in stock, and sells, it initially reduces to 0

however a few minutes later it then shows as -1!

this is happening to every sale. Cant figure out what is happening...

[iweb_smartie]

To narrow it down, you could try removing the xpos till plugin and see if it still reduces the stock level by 2.