Let's look at some of his claims from this link:

"Most people believe that gallstones can be found only in the gallbladder. This is a common false assumption. Most gallstones are actually formed in the liver and comparatively few occur in the gallbladder."

Liver stones are EXTREMELY rare as Spud, who worked for the coroner also pointed out, and that any medical text will point out.  

Liver stones again are EXTREMELY rare and when are seen are generally in Asian countries where they are caused by parasitical infections.

Furthermore there is a good reason that most real gallstones form in the gallbladder.  Most real stones form as the bile, which is stored in the gallbladder, becomes supersaturated by cholesterol. The excess cholesterol precipitates out forming the stones.  Hormones play a big role here as estrogen stimulates the release of cholesterol in to the bile and progesterone prevents proper bile excretion leading to more cholesterol saturation of the bile.

" Once you see hundreds of green or beige-colored gallstones floating in the toilet bowl during your first liver flush, you will intuitively know that you are on to something very important in your life."

First of all real gallstones DO NOT float.  So that proves they are not gallstones right there.  Secondly real gallstones are not beige either, and the green "stones" are not the correct color green for real gallstones.

"I can document that each person, without exception, has had considerable quantities of gallstones in their liver."

So where is this documentation?  Where are the lab reports showing that these are true gallstones? 

"Therefore, typical clinical tests are not a reliable way to detect gallstones in the liver."

First of all gallstones and even the extremely rare liver stones ARE NOT diagnosed by liver enzymes. Secondly, if there is no way to accurately detect real stones as he is claiming then how does he know that any of the people he has worked with had REAL gallstones or liver stones to begin with? 

Any kind of malfunction, deficiency or abnormal growth pattern of the cell is largely due to poor liver performance.

What about lack of growth hormone or too much growth hormone?  This does not result from liver dysfunction. What about nutritional deficiencies or genetic disorders again not involving the liver.  What about cancers, which are generally viral in origin.  The liver does not regulate the growth of cancer cells.  

"All diseases or symptoms of ill health are caused by an obstruction of some sort. "

How does he explain things like autism? Or genetic hemochromotosis? Or osteoporosis?..............  

"If a blood vessel is blocked and therefore can no longer provide speedy delivery of vital oxygen or nutrients to a group of cells, the cells will have to enforce specific emergency measures in order to survive. Of course, many of the afflicted cells will not survive the 'famine' and will simply die off. But other, more resilient cells will learn to adjust to the adverse situation (cell mutation) and live of trapped, toxic metabolic waste products. Although, in reality, such a survival response helps to prevent the body's immediate demise through septic poisoning, we tend to label it as 'disease'. In this case, the label is known as cancer."

So how do blood cancers  form such as leukemias and lymphomas since they are not part of tissues being blocked? As for the claim that these cells live off of trapped toxic metabolic waste products, cancer cells feed on glucose just like normal cells.  The only difference is how the glucose is metabolized.  In healthy cells the glucose is processed through respiration as where in malignant cells the glucose is fermented resulting in lower ATP production.