for your first question, if you aer using Non-sequental Mode then you could find MEMs directly under the NS object list, The DLL version is used in sequential mode alone! ]7yr.4?a 27-GfC=7* For your 2nd Q, like the upstairs's reply, the STEP files should be saved under ZEMAX\Objects\CAD Files. o7;#B)jWS 5T4 !' 4n Hope this would help :)
