This appears to be an issue with any ampersand that is in a string being pulled into the document, which is a known Sugar bug and will be resolved in a future release.
Please ensure that no fields being merged include an ampersand &. This includes drop down fields such as Product Category and Product Types in the Quotes module for instance.
If this does not resolve the issue, please see the following Get support in Access CRM and we will gladly assist you further.
