No error, but when trying to connect a sprinkler to a pipe, connect head does not let you select a sprinkler

stacked rn connects to first pipe and misses second pipe leaving a pipe going up to nowhere. this is caused by a floor boundary with a negative elevation adn computer generated VP

When connecting a hard pipe armover to a flexible sprinkler connection (FSC), the flex hose doesn't continue straight, instead it immediately turns 90° before curving back and down to the sprinkler head.

Even with setting the connection to OVER-DOWN

When using connect heads to pipes AND the family Fire Protection Lines Threaded AND connecting three (3) or more sprinklers, one (1) pipe segment disappears during the command.

There is a 3 pipe connection at node point but all 3 change marks are the same. Use Velocity Pressure Input error

Runtime Error 6 when Attaching Fittings

Fitting is a RED. COUPLING @ node DAB0C connected to pipes D9FE8 :D9FE2.

Trying to run a auto calc from a drawing.  How do I find the referenced pipes?

Error occurs when "Add Calculation Fittings" is used when running AutoCALC the first time after a new install. A registry entry for one of the Pipe Schedule properties is not set in the registry. (The Pipe Schedule is connected to fittings definitions.) error 75

Water supply test point not connected to a pipe. Reinsert water supply\test point

When editing and saving data for pipes, fittings, or flexible connections, you get a Run-time error 76, Path not found error

After using the Spacing and Layout tool, the pipes and sprinklers are modeled but are not connected properly to each other. 

Revit could not complete the external command... Curve length is too small for Revit's tolerance

No connectable heads found within distance specified for the line

illustrated, or heads were already connected ...

No connectable heads message comes up, even when there are obviously heads that can be connected. Can also be error stating Please re-select line away from other lines

No Error given but Pipes look like theyy are missing after program completion.

Bad prettypipes.dat file

Bug with the new Flexible Hose Connections. Drawing with FHCs will get this error, drawings without will not get the error Unhandled Except. Dialog Box v50

no error or error 13 ediiting aquivalent lengths or all the pipe disappears or file will not open after it was open intially or error or lockup during the process or error or lockup during error check Flexible Connection Flex flexhead

When viewing your Persistent Model drawing, you see the clamshells/Pacman/bracket for the riser nipples/vertial pipes

Using HydraCAD buttons cause errors like Loading Shared Parameters for Pipes Failed....

Vertical pipe issue.  Switching back to Edit Mode (S2D) leaves HydraPipes in Hydrapipe layer.

Then when trying to show system model again (S3D) you get an AutoCAD message box "Please Switch to Edit Mode"

After setting specific linetypes for your piping, pretty pipes doesn't match the linetype of your pipe.

The pipe noted should show a HIDDEN pretty pipe, similar to the one below it

When printing a final calculation, the font doesn't show fraction symbols for ¼ (quarter), ½ (half), or ¾ (three-quarters)

They're replaced with ?.840, ?1.050, and ?1.660

These should look like this;

Of note, if using HydraCAD for AutoCAD, you get similar results on riser nipples/vertical pipes