Since the beginning of May, we have seen an increasing number of one error type (called TaskCanceledException) across all versions of PDFCreator since the 2.x versions. As these versions have worked for years without this error, it seems that this is caused by a bug in the .Net framework that was introduced with a Windows update.
PDFCreator crashes with this error when the application was closing. Everything was processed and saved successfully, but at the end there was this exception. As a workaround, we are now catching and hiding this error when it occurs and hope that Microsoft will be able to fix this in the future.
We’d like to thank all users for submitting the error reports and helping us narrowing down this strange error.