Site server MTS Pipeline error

We have a Pipeline Error in Financials Webshop 2.60B Commerce.MtsPipeline error ‘800005a4’ This MTS pipeline was called on a thread that is different from the thread it was created on. MTS pipelines must be created, loaded and executed on the same thread of execution, e.g., the same ASP page. /da/include/util.asp, line 183 The Error comes when you push the shopping Basket button, but if you push the button again the erros is gone is there anyboby who has an idea, how we fix this problem ???