ETS2 non si avvia

Ciao,
da un po' di giorni quando non riesco ad avviare il gioco e andando nel game.log ho riscontrato questi due errori:
00:00:00.431 : <error> [steamfs_device_t] Cannot initialize directories structure with the file profiles/434F44455831/config.cfg
00:00:00.431 : <error> core_game_proc.cpp(4644): ?setup_ufs@core_game_proc_t@prism@@UEAAXXZ: Cannot create steam fs device

Sapete dirmi cosa sono e nel caso risolvermi il problema?
Grazie.

00:00:00.000 : [cpu] CPU0: GenuineIntel [Intel(R) Core(TM) i5-6400T CPU @ 2.20GHz] with 4 cores (4 threads) at ~2208MHz.
00:00:00.000 : [sys] using 3 worker thread(s)
00:00:00.000 : [sys] and 3 worker threads for IO.
00:00:00.000 : [sys] plus 3 real-time worker threads.
00:00:00.000 : [sys] using QPC / TSC invariant timer, frequency 2156250Hz
00:00:00.001 : [mem] physical total: 16317M
00:00:00.001 : [mem] physical avail: 13417M
00:00:00.001 : [mem] virtual total: 134217727M
00:00:00.001 : [mem] virtual avail: 134213111M
00:00:00.001 : [mem] Trying to allocate memory pool (819200K)
00:00:00.001 : [mem] Allocated 5 temporary loading buffer(s)
00:00:00.011 : [xinput] Using XInput version 1.4.0
00:00:00.018 : [hashfs] effect.scs: Mounted, 9981 entries
00:00:00.095 : [hashfs] base.scs: Mounted and validated, 76903 entries (A84E56F6C75A1AB3109985CA6D17F172F7E982046BCA74137F2D4197015636A9)
00:00:00.096 : [hashfs] core.scs: Mounted and validated, 9 entries (A3D6A0C5266750972324EDBF2CA009D8D787C0DA2DC79C6CDC5A265D0C717595)
00:00:00.331 : [hashfs] def.scs: Mounted and validated, 13659 entries (E4C392DF7AAB91267727A84D9FB5F9D3B1840F40C5FF5424D6072CD1B8134E83)
00:00:00.426 : [hashfs] locale.scs: Mounted and validated, 172 entries (BFD3587D6F828C126F804B61B49C8A580DFF6A8C1869FC0CC4E3AC70F2034F68)
00:00:00.427 : [hashfs] base_cfg.scs: Mounted and validated, 1 entries (409D42EEB00BB9A5886721D721A8A32662076837BB2BEB6B98B9E5A0F3E405B5)
00:00:00.427 : [ufs] Home directory: 'C:/Users/Utente/Documents/Euro Truck Simulator 2'.
00:00:00.430 : <error> [steamfs_device_t] Cannot initialize directories structure with the file profiles/434F44455831/config.cfg
00:00:00.430 : <error> core_game_proc.cpp(4644): ?setup_ufs@core_game_proc_t@prism@@UEAAXXZ: Cannot create steam fs device