Error message in Recall Recurring Transaction

Hi,

I use the Recurring Transaction feature for recurring purchases (and others). However, since recently (Maybe since the last update? The version is now Release 2017.2) I get this error message when I type a letter to select a transaction (i.e. if the recurring transaction is named "Utility" I would type u. This is the message it gives:

 

So far this only happens when recalling transactions in the Purchases Journal window.

 

Can anyone point to a solution?