No error... but the view shows up in the project browser but quickly disappears after and cannot be accessed. 

Command Failure for External Command... System.NullReferenceException

Unhandled exception has occurred in your application. If you click
Continue, the application will ignore this error and attempt to continue. If
you click Quit, the application will close immediately.
Could not load file or assembly 'Newtonsoft.Json, Version=13.0.0.0,
Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed" or one of its
dependencies. The located assembly's manifest definition does not match
the assembly reference. (Exception from HRESULT: 0x80131040).

When clicking the abacus to enter a length, you get this error;

Unhandled exception has occurred in a component in your application.  If you click Continue, the application will ignore this error and attempt to continue.

Index and length must refer to a location within the string.  Parameter name: length

When clicking the abacus to enter a length, you get this error;

Unhandled exception has occurred in a component in your application.  If you click Continue, the application will ignore this error and attempt to continue.

Index and length must refer to a location within the string.  Parameter name: length

When clicking the abacus to enter a length, you get this error;

Unhandled exception has occurred in a component in your application.  If you click Continue, the application will ignore this error and attempt to continue.

Index and length must refer to a location within the string.  Parameter name: length

When plotting two viewports, one with center-to-center lengths, and the other with cut lenghts, the riser nipples/vertical pipes will show both, even if your layout tab looks fine.

LAYOUT TAB

PLOT PREVIEW

While trying to process a job you get this error;

Processing Reports, Writing .HLPF file > Total page count: 1

The VSPrinter control is emptly (no document to translate).  Please close the PDF file before processing

No error, but the section's background becomes blue / light blue after placing down the supply point

When doing a Save As a file is created called Dummy.

No error, but my 90-degree elbows aren't showing up in coarse detail view.

Printing a final calculation to PDF creates a blurry or pixelated cover sheet logo

When attempting to 'Start AutoLIST' (SAL command), user gets an AutoCAD Fatal Error.

Unhandled Exception - System.FormatException: Input string was not in a correct format 

When clicking the abacus to enter a length, you get this error;

Unhandled exception has occurred in a component in your application.  If you click Continue, the application will ignore this error and attempt to continue.

Index and length must refer to a location within the string.  Parameter name: length

When opening HydraCAD you get the error;

Exception in hcadmainbase.arx ARX Command

Unhandled Exception c0000027 (c0000027h) at address aca746e7h

Command Failure for External Command... Autodesk.Revit.Exceptions.InvalidOperationException: DisplayStyle cannot be modified

Error creating view

When attempting to view a clash from Clash Results, it shows this error: Error creating view

When running AutoCALC, the process stops around step 2.4c and you get a Run-time error 457, "This key is already associated with an element of this collection