There are different Mesoros to how many Kapitlach, Tehillim consists of.
a) Our Mesora is 150.
b) The Yerushalmi (Shabbos #16 Hl.1) says there are 147 Parshiyos.
c) The Meieri on Tehillim has 151
The חפץ חיים was upset The שר התורה הרה"ג ר' חיים קניבסקי writes the חפץ חיים was upset that he missed an impo...