After update 6.17 -> 6.18 WinBox crashed with error.
I have system Win7SP2 32bit
After update I can not run WinBox, after double click on program visible pop-up window:
Header: Microsoft Visual C++ Runtime Library
Body: This application has requested the Runtime to terminate it in unusual way.
Please contact the application's support team for more information

Windows event diagnostic have next information:

name fault app: winbox.exe,
name fault module: roteros.dll,
Code exception: 0x40000015
Shift error: 0x0006f936
Identifier fault code: 0x3e0
Way of fault module C:\Users\XXXXXXX\AppData\Roaming\Mikrotik\Winbox\6.18-2536446055\roteros.dll

application's support team, I need help

delete all file inside C:\Users\XXXXXXX\AppData\Roaming\Mikrotik\Winbox\ except address book

delete all file inside C:\Users\XXXXXXX\AppData\Roaming\Mikrotik\Winbox\ except address book

No way!
I have MikroTik RB751U-2HnD
I try to connect from different devices: Win7 32bit, Win7 64bit, WinXP SP3
and always i see pop-up windows Microsoft Library C++ Runtime Error.

Next step, download Winbox version 3.0beta3 and try to connect.
Error pop-up alway information about Library C++ troubleshoot

What is it???

probably routeros installation is corrupted, reinstall routeros using netinstall, but if on all the devices are present the same anti-virus....

Ok, trouble with Library Error go away after next step:
1. Login via webinterface
2. Go to IP-Services
3. Disable WinBox 8291
4. Reboot router
5. After reboot login via web
6. Goto IP-Services
7. Enable WinBox 8291

Profit.
This troubleshoot continue after previous update (problem with SNMP)