GUI crash when starting service after upgrade

[mjb2010]

• I had SimpleDNSCrypt 0.6.2 installed and running on Windows 7 Pro SP1 64-bit for a long time.
• Today I downloaded and ran the installer for 0.7.1.
• When prompted by the installer, because files were in use, I chose to reboot later, and not to run SimpleDNSCrypt now.
• I rebooted as soon as the installer was done.
• I ran SimpleDNSCrypt.exe and saw that the service was not running, and no network interfaces were selected..
• I enabled the service. It took a minute, but the switch icon eventually turned green.
• SimpleDNSCrypt.exe crashed and I had to choose to Close The Program or Debug The Program.
• I chose Debug The Program. Dr. Mingw gave me the following unhelpful report (see below).
• After that, I was able to run SimpleDNSCrypt.exe without incident, including turning the service off and on.

SimpleDnsCrypt.exe caused an Unknown [0xE0434352] Exception at location 000007FEFD57B87D in module KERNELBASE.dll.

AddrPC   Params
7FEFD57B87D E0434352 20DAE688 043C6420 KERNELBASE.dll!RaiseException
7FEF374A451 043C6420 20DAEA50 1FFF4C80 clr.dll!RaiseTheExceptionInternalOnly
7FEF391E8F9 20DAEA50 00000000 043C5F70 clr.dll!UnwindAndContinueRethrowHelperAfterCatch
7FEF3737042 041DF530 20DAEA50 041DF4D0 clr.dll!SafeHandle::DangerousAddRef
7FEF26AEF21 041DF530 00000000 FFFFFFFFFFFFFFFE mscorlib.ni.dll!0x7fe0057ef21
7FEF276C63E 041DF4D0 00000000 20DAEAF0 mscorlib.ni.dll!0x7fe0063c63e
7FEF268EE75 20DAEB50 7FEF306B784 00000001 mscorlib.ni.dll!0x7fe0055ee75
7FE942510BD 7FEF306B784 00000001 041E3148
20DAEB50 00000001 041E3148 00000000
7FEF306B784 041F47A0 7FEF27652D5 03612FC0 mscorlib.ni.dll!0x7fe00f3b784
041DF160 7FEF27652D5 03612FC0 20DAEBE0
041F47A0 03612FC0 20DAEBE0 00000000
7FEF27652D5 F2159B18 7FEF276528C 20DAEBF0 mscorlib.ni.dll!0x7fe006352d5
7FEF1DF2E45 041E1E68 00000000 00000000 System.ni.dll!0x7fe00932e45
7FEF1DF29B5 041E1E68 20DAED10 043C6310 System.ni.dll!0x7fe009329b5
7FEF26BDF12 043C6250 7FEF37AD770 20DAEE60 mscorlib.ni.dll!0x7fe0058df12
7FEF26BDD95 03612F20 00000000 043C6310 mscorlib.ni.dll!0x7fe0058dd95
7FEF31255EE 03612F20 043C6250 035692F0 mscorlib.ni.dll!0x7fe00ff55ee
7FEF2696F87 041F45E8 132F1048 20DAF178 mscorlib.ni.dll!0x7fe00566f87
7FEF272A434 20DAF178 7FEF3EFE9F0 20DAF460 mscorlib.ni.dll!0x7fe005fa434
7FEF272B227 041F45E8 041808C0 043C6250 mscorlib.ni.dll!0x7fe005fb227
7FEF272A8E1 20DAF178 00000000 20DAF038 mscorlib.ni.dll!0x7fe005fa8e1
7FEF2688E46 7FEF37373B8 00000000 7FEF373790D mscorlib.ni.dll!0x7fe00558e46
7FEF3736CB3 20DAF288 7FEF37376F8 00000001 clr.dll!CallDescrWorkerInternal
7FEF3736BC8 20DAF288 00000000 20DAF460 clr.dll!CallDescrWorkerWithHandler
7FEF3737430 20DAF740 20DAF6F0 20DAF740 clr.dll!MethodDescCallSite::CallTargetWorker
7FEF373C1AA 00000004 00000000 FFFFFFFFFFFFFFFE clr.dll!QueueUserWorkItemManagedCallback
7FEF37382E0 20DAF4A0 7FEF3735C25 00000000 clr.dll!ManagedThreadBase_DispatchInner
7FEF3738253 20DAF4A0 00000000 00000000 clr.dll!ManagedThreadBase_DispatchMiddle
7FEF3738192 FFFFFFFFFFFFFFFF 1FEA2B50 FFFFFFFF clr.dll!ManagedThreadBase_DispatchOuter
7FEF373836F 00000001 20DAF6F0 1FEA2B50 clr.dll!ManagedThreadBase_FullTransitionWithAD
7FEF373C0F7 400040004 20DAF738 20DAF740 clr.dll!ManagedPerAppDomainTPCount::DispatchWorkItem
7FEF3737EA7 400040004 00000001 1FEA2B50 clr.dll!ThreadpoolMgr::ExecuteWorkRequest
7FEF3737D7F 00000000 00000000 1F8000100001 clr.dll!ThreadpoolMgr::WorkerThreadStart
7FEF373B665 00000000 00000000 00000000 clr.dll!Thread::intermediateThreadProc
777D556D 00000000 00000000 00000000 KERNEL32.dll!BaseThreadInitThunk
77A3372D 00000000 00000000 00000000 ntdll.dll!RtlUserThreadStart