This is a low-level system call failure. The program asked the operating system, "Please give me bytes X through Y from this file" and the OS replied with something other than success.
The most critical clue. rus is a standard abbreviation for . read error of file rus code-pre-gfx
In the landscape of PC gaming and software emulation, few things are as frustrating as an application crash immediately upon launch. For users of older software titles—specifically those running on the Quake 3 Engine (id Tech 3) or their derivatives—one specific error message has persisted as a notorious hurdle: . This is a low-level system call failure