I just updated from chemdraw v16 to chemdraw v18. The plugin for Excel is now very slow when using copy/paste, delete and move. The program just hangs for 5-10 min. It is mostly a problem when an operation is performed on an entire row. I'm using Windows 10 on a Lenovo Think Pad.

How you did the up-gradation from v16.0 to v18.x? Did you cleared the registry entries corresponding to v16.0 prior to install v18.x?

I am not sure about the product as well as the version of product (18.0 or 18.1 or 18.2.0.48) you have installed. Also not sure about your MS Office 2016 (32 bit or 64 bit).

Please retest the problem with our v18.2.0.48.

If you need further assistance please visit http://informatics.perkinelmer.com/Support/Contact/ to submit a ticket (or send an email to informatics.support@perkinelmer.com), to get assistance from our Tech Support Team

- PKI Support

I downloaded V18 from the Perkin Elmer site, and ran the installation with all the default settings. Everything was automatic - it removed v16 and installed v18.2.0.48. I don't know how to check if the registry entries were cleared. I'm running 32 bit Office. I upgraded the Excel sheets to the new format when prompted.

Thank you for the information, please visit http://informatics.perkinelmer.com/Support/Contact/ to submit a ticket (or send an email to informatics.support@perkinelmer.com), to get assistance from our Tech Support Team

- PKI Support