hello!
i just bought event calendar. bit when i want to install the dmxAjaxCalendar105.mxp the extension manager alwas writes "cannot overwrite the menues. the installations failed".
what to do?
thanx
regards

Please provide your OS, DW version and a screenshot of the error if possible.

problem solved - i deinstalled dreamweaver completely including preferences. also i deinstalled all dmx extensions and installed dreamweaver and all extensions new. now´s working again!