Several pilots using mccPILOTLOG - Version 3.6 are reporting Error 6 or Error 7 when printing reports or printing the logbook :

There appears to be a conflict between the component, used by mccPILOTLOG to generate reports and printing the logbook, and the latest update of Windows 10 - revision 1703.  We have no control over any of these two...

Immediate Solution :  Turn-back the W10 system to the previous version (June 2017), the printing works fine again.

As a permanent solution, you need to upgrade mccPILOTLOG from your current Version 3.6 to the newer Version 4.0  This version is using different components and does not suffer from the said error.  

Upgrade to Version 4.0 is free of charge. Use the following guidelines to upgrade :

Version 4.0 is a cross-platform application running on Windows and Mac. Our team is currently working on Version 5.0 of mccPILOTLOG, which is based on, but still very different from Version 4.0  Release of Version 5.0 is planned for the end of 2017.  The plan was to migrate all users from Version 3.6 straight to Version 5.0 as to avoid the extra workload. If you can hold-on with updating your Windows 10 for a few months, you can avoid the intermediate step.