When trying to run a source calc calculation (find the maximum possible denisity) with a pump as one of the water supplies, you get the error message; 

A source calc cannot be performed if a pump is present.  Please remove the pump or uncheck 'Source Calc' to continue.

Calc results show; Flow required & Pressure required: -1.#IO System is 0.00 under the Water Supply Curve n/a n/a

When selecting a new sprinkler from the Head Selector, after selecting Temp & Finish and upon pressing Select Head:

Value cannot be null ...Parameter name: loadedFamily

Couplings get closer than expected to outlets when cutting in. 

Long, but will reference cheettext.c and 0x50 and 710 PCL XL Error HydraView

Cover Page The box which normally surrounds the company information and the project is drawn *above* the information. It's drawn as a short long box with nothing inside n/a HydrawVIEW

Untitled.hlf is somehow protected and will not delete. Runtime Error 70, 70

Failed to Open Mail program on local machine.  You don't have a default mail program set on your machine or are using only online mail.

Type Mismatch Runtime error 13

HydraCALC Load_Data Error Error loading file, confirm Filename and location are correct... <> Dialog Box HydraCALC