Impact ... In some cases this can cause TMM to crash. ... Traffic disrupted while tmm restarts. ... Conditions ... When the HTTP profile Request Header Insert field contains a Tcl interpreted string, Tcl is executed to expand the string before the header is inserted into the request header block. ... If a Tcl error occurs ... Workaround ... You can use either of the following to mitigate this: -- Verify that your Tcl executes correctly in all cases. -- Use a static string. ... Fix Information ... TMM no longer crashes under these conditions. ... Behavior Change