Crashes on startup

Several times a week DO crashes on the first use. Each time it's OK when I run it again. This the latest error in the event log:

Faulting application name: dopus.exe, version: 4.0.3.16, time stamp: 0x4ff52582
Faulting module name: ntdll.dll, version: 6.1.7601.17725, time stamp: 0x4ec4aa8e
Exception code: 0xc000041d
Fault offset: 0x000000000005181a
Faulting process id: 0xff4
Faulting application start time: 0x01cd5eff29d7c5ab
Faulting application path: C:\Program Files\GPSoftware\Directory Opus\dopus.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 68b06178-caf2-11e1-a4df-6805ca03b053

And this is one from a few days ago:
Faulting application name: dopus.exe, version: 4.0.3.16, time stamp: 0x4ff52582
Faulting module name: ntdll.dll, version: 6.1.7601.17725, time stamp: 0x4ec4aa8e
Exception code: 0xc000041d
Fault offset: 0x000000000005181a
Faulting process id: 0xf90
Faulting application start time: 0x01cd5cac4d39a117
Faulting application path: C:\Program Files\GPSoftware\Directory Opus\dopus.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 8c6c8da5-c89f-11e1-ad52-6805ca03b053

Another:
Faulting application name: dopus.exe, version: 4.0.3.16, time stamp: 0x4ff52582
Faulting module name: ntdll.dll, version: 6.1.7601.17725, time stamp: 0x4ec4aa8e
Exception code: 0xc0000005
Fault offset: 0x0000000000058ef0
Faulting process id: 0x13f0
Faulting application start time: 0x01cd5b202ff43693
Faulting application path: C:\Program Files\GPSoftware\Directory Opus\dopus.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 6fa02b08-c713-11e1-9b1a-6805ca03b053

Can you help me to fix the problem please?

The crash you are seeing may be triggered by something in the directory that Opus is trying to open when it starts, so it may be worth seeing if double-clicking on different folders causes the crash, or if it only happens with particular folders.

If the crash only happens with particular folders then we have a guide on how to narrow down the cause to a particular file and/or plugin or shell extension.

If the crash happens with all folders, it might be worth reinstalling Opus 10.1.0.0 over the top of your existing install. (Don't uninstall as that will erase your configuration.)

If that still doesn't help, see if any crash-dump files have been created at the same date and time as the crashes.

On the other hand, if the crash only happens during startup and never when you run Opus manually then it may be caused by a shell extension (or possibly anti-virus or something else that gets loaded into the Opus process) which is going wrong if some other component is not ready yet after the reboot. e.g. Some shell extensions talk to the network, which may not be fully established yet early after rebooting, and they may not cope with that properly.