Eclipse can't compare numbers

An internal error occurred during: "Installing Software". Profile epp.package.php is not current. Expected timestamp 1514880171678 but was 1514880171678.

To me 1514880171678 looks exactly the same as 1514880171678, but Eclipse fails installing THyM. I wonder, is this project still alive? The current Oxygen release is not mentioned and the latest release was a year and a half ago.