When a workbook with a number of worksheets larger than a certain count is saved an out of memory exception is thrown. The necessary number of worksheets depends on the file and the machine, but it ranges between 70-90.
Hi, The issue is fixed and will be live with our next LIB release. It will be included in our next official 2016 R2 SP1 release as well. Regards, Aylin, The Telerik Team