Spire.XLS 7.12.11 fixes an issue that caused exception when merging documents

We are glad to announce that the latest hot fix version of Spire.XLS 7.12.11 is available today. In this version, an issue that caused KeyNotFoundException when merging Excel documents has been fixed.
Bug Solution:
- Fixes the issue that caused KeyNotFoundException when merging multiple excel documents.
Welcome to experience Spire.XLS 7.12.11 with downloading here:
http://www.e-iceblue.com/Download/download-excel-for-net-now.html
More information of Spire.XLS new release or hotfix:
https://www.e-iceblue.com/forum/spire-xls-new-release-or-hotfix-t4630.html