Rating: 5 stars

works on wordpress 4.4.1. thank you for solving the bug.

Rating: 4 stars

Plugin works fine.
Had to tamper with custom CSS to make the code block no-wrap and horizontal-scrollable:

.prettyprint {
  white-space: pre;
  word-wrap: normal;
}
.prettyprint,
pre {
  max-height: 400px;
  overflow: auto;
  padding: 5px;
  width: auto;
}

for some reason, after changing custom CSS, it stopped working with the load JS/CSS in footer option.

Rating: 5 stars

[FIXED] Only 1 CSS file prettify.css is correct. Other 4 files are wrong: they contains HTML pages instead of Style Sheets.

[UPDATE] Author answers quickly and he fixed this bug.