We have seen an intermittent bug with TAPOP. .TFLSU when using the reel switches, which can cause an IME. To correct the problem, the following lines of code should be inserted in TAPUUO @TPMLSU: MOVE T1,DEVNAM(F) ;GET CURRENT DEVICE'S NAME PUSHJ P,DEVPHY## ;LOCATE IT WITH A VALID PREDECESSOR JRST ECOD2## ;PUNT IF IT WENT AWAY