Unable to select a pipe or fitting when trying to use the Delete Pipe tool.

Have AutoCAD select a group of pipe dimension blocks with a specific diameter or length. 

In this example I want to find and delete all diameters with a ?" as its value.

TWO SYMPTOMS:

Drawing fittings and pipe look disjointed, like that time an alien team of scientists were performing out-of-phase medical experiments on the Voyager crew.

Or, on the way into Revit, you get this error;

Error (must be addressed in order to continue)

Revit has experienced an unexpected error.  The operation has been cancelled to protect your project from corruption

Deleted element

When reporting the error, you may see this;

Hashtable head_table, Hashtable FLXpipeTable, List '1 listFtgs, flexpipes PipeTypeInfo ptInfo

When inserting a listing tag on a pipe, you get the error, "Invalid color number"

Shared Parameter (Default Fitting Assembly Code (Hydratec)) for Pipe is MISSING

After attempting to download the Latest Toolbox, a warning appears saying the file cannot be opened. 
Tells user to delete toolbox .rvt file and try again, but that does not work. 

When trying to size a pipe, the units show up as millimetres/millimeters (mm) instead of inches OR the values for half show up as a backslash

Trying to insert a fabricated pipe via HydraLIST doesn't show any outlets, ski poles, etc.

As shown in HydraLIST;

Inserted into HydraCAD;

Note, no GOL is shown.

Runtime Error 3167. Error message: Record has been deleted

Using the Sprinkler Spacing and Layout tool: Revit encountered a Autodesk.Revit.Exceptions.InvalidObjectException: The referenced object is not valid, possibly because it has been deleted from the database, or it's creation was undone.

Setting certain pipe diameters with specific pipe types gives an ID of 0.

Eg. 1½" - SCHED 40 shows up as 0 rather than 1.61. n/a HydraCalc

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....

During the AutoCALC process, it gets hung up at step 5a.3b. 

Re-Ordering Pipe Paths - Phase 2

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 inserting a vertical pipe, the circle part of the block remains as a white circle, instead of a red pacman/clamshell.

Step 1a.3 - Fitting Exchange No replacement fitting name for 22E for Sched-10 Note: This could be any fitting or pipe type described in the error. If you click ok at each error, the process will run through without these fittings

When trying to break in a rapid pipe/rapid line/rapid main, it will not tee into a pipe.  In the image below, it is not showing the break in triangle.

When trying to open HydraCAD after a recent install, you get this error or one similar to it;

"Missing shortcut", Windows is searching for acad.exe.  To locate the file yourself, click Browse.

AND

Problem with Shortcut - The item 'acad.exe' that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly.

Nearest match based on size, date, and type:

Do you want to fix this shortcut to point to this target or do you just want to delete it?