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Issue
When exporting a specification to PDF you receive the following error message: 'Error printing document. Error message: Object reference not set to an instance of an object.'
Affects
NBS Building and NBS Landscape 5.6.0 and 5.6.1 when a stylesheet has been loaded.
Solution
1. Close down the NBS Software.
2. Re-open the NBS Software.
3. Export the specification to PDF (the stylesheet will be retained).
More Information
We are currently investigating the cause of the crash and this will be fixed in a future release.