Assembly Error Fez Mini

2 months ago I’ve been playing around with the FEZ Mini, DC Servo and a reflective sensor. This worked great.

Since I ordered some new sensors I started to play around again…but i’ts not working.

When I use the FEZ teemplate in visual studio I can run the program and the led starts blinking. When I referen the using GHIElectronics.NETMF.Hardware assembly it stops working and I get the following message in my output window:

Rebooting…

Create TS.

Loading start at 4e13c, end 56314

Attaching file.

Assembly: mscorlib (4.1.2821.0) (3880 RAM - 33236 ROM - 19134 METADATA)

AssemblyRef = 0 bytes ( 0 elements)

TypeRef = 0 bytes ( 0 elements)

FieldRef = 0 bytes ( 0 elements)

MethodRef = 0 bytes ( 0 elements)

TypeDef = 1112 bytes ( 139 elements)

FieldDef = 272 bytes ( 135 elements)

MethodDef = 1572 bytes ( 786 elements)

Attributes = 0 bytes ( 0 elements)

TypeSpec = 16 bytes ( 4 elements)

Resources = 232 bytes ( 29 elements)

Resources Files = 16 bytes ( 2 elements)

Resources Data = 437 bytes

Strings = 1551 bytes

Signatures = 2126 bytes

ByteCode = 11702 bytes

Loading Deployment Assemblies.

Attaching deployed file.

Assembly: FEZ Mini Application (1.0.0.0) (356 RAM - 1388 ROM - 687 METADATA)

AssemblyRef = 20 bytes ( 5 elements)

TypeRef = 72 bytes ( 18 elements)

FieldRef = 0 bytes ( 0 elements)

MethodRef = 48 bytes ( 12 elements)

TypeDef = 40 bytes ( 5 elements)

FieldDef = 8 bytes ( 3 elements)

MethodDef = 20 bytes ( 9 elements)

Attributes = 0 bytes ( 0 elements)

TypeSpec = 0 bytes ( 0 elements)

Resources = 16 bytes ( 2 elements)

Resources Files = 8 bytes ( 1 elements)

Resources Data = 13 bytes

Strings = 304 bytes

Signatures = 99 bytes

ByteCode = 216 bytes

Attaching deployed file.

Assembly: FEZMini_GHIElectronics.NETMF.FEZ (4.1.6.0) (304 RAM - 896 ROM - 495 METADATA)

AssemblyRef = 12 bytes ( 3 elements)

TypeRef = 44 bytes ( 11 elements)

FieldRef = 0 bytes ( 0 elements)

MethodRef = 20 bytes ( 5 elements)

TypeDef = 72 bytes ( 9 elements)

FieldDef = 12 bytes ( 6 elements)

MethodDef = 4 bytes ( 2 elements)

Attributes = 0 bytes ( 0 elements)

TypeSpec = 0 bytes ( 0 elements)

Resources = 0 bytes ( 0 elements)

Resources Files = 0 bytes ( 0 elements)

Resources Data = 0 bytes

Strings = 174 bytes

Signatures = 35 bytes

ByteCode = 98 bytes

Attaching deployed file.

Assembly: GHIElectronics.NETMF.System (4.1.6.0) (488 RAM - 2496 ROM - 1465 METADATA)

AssemblyRef = 12 bytes ( 3 elements)

TypeRef = 48 bytes ( 12 elements)

FieldRef = 0 bytes ( 0 elements)

MethodRef = 56 bytes ( 14 elements)

TypeDef = 80 bytes ( 10 elements)

FieldDef = 28 bytes ( 14 elements)

MethodDef = 84 bytes ( 41 elements)

Attributes = 0 bytes ( 0 elements)

TypeSpec = 0 bytes ( 0 elements)

Resources = 0 bytes ( 0 elements)

Resources Files = 0 bytes ( 0 elements)

Resources Data = 0 bytes

Strings = 549 bytes

Signatures = 213 bytes

ByteCode = 349 bytes

Invalid native checksum: GHIElectronics.NETMF.System 0xC032A004!=0x74883E49

Attaching deployed file.

Assembly: GHIElectronics.NETMF.Hardware (4.1.6.0) (1200 RAM - 7936 ROM - 4727 METADATA)

AssemblyRef = 12 bytes ( 3 elements)

TypeRef = 96 bytes ( 24 elements)

FieldRef = 0 bytes ( 0 elements)

MethodRef = 96 bytes ( 24 elements)

TypeDef = 304 bytes ( 38 elements)

FieldDef = 116 bytes ( 58 elements)

MethodDef = 292 bytes ( 146 elements)

Attributes = 0 bytes ( 0 elements)

TypeSpec = 0 bytes ( 0 elements)

Resources = 0 bytes ( 0 elements)

Resources Files = 0 bytes ( 0 elements)

Resources Data = 0 bytes

Strings = 2087 bytes

Signatures = 595 bytes

ByteCode = 993 bytes

Invalid native checksum: GHIElectronics.NETMF.Hardware 0x9C770BE2!=0xA1518A4B

Resolving.

Link failure: some assembly references cannot be resolved!!

Assembly: FEZ Mini Application (1.0.0.0) needs assembly ‘GHIElectronics.NETMF.Hardware’ (4.1.6.0)

Assembly: FEZ Mini Application (1.0.0.0) needs assembly ‘FEZMini_GHIElectronics.NETMF.FEZ’ (4.1.6.0)

Assembly: FEZ Mini Application (1.0.0.0) needs assembly ‘Microsoft.SPOT.Hardware’ (4.1.2821.0)

Assembly: FEZ Mini Application (1.0.0.0) needs assembly ‘Microsoft.SPOT.Native’ (4.1.2821.0)

Assembly: FEZMini_GHIElectronics.NETMF.FEZ (4.1.6.0) needs assembly ‘Microsoft.SPOT.Native’ (4.1.2821.0)

Assembly: FEZMini_GHIElectronics.NETMF.FEZ (4.1.6.0) needs assembly ‘Microsoft.SPOT.Hardware’ (4.1.2821.0)

Error: a3000000

Waiting for debug commands…

The program ‘[2] Micro Framework application: Managed’ has exited with code 0 (0x0).

I have reinstalled my PC and reinstalled the SDK. Maybe I have to update the firmware? I tried this, but I’m not able to update the firmware, I’m even not able to ping the device using MF deploy.

Yes it is update firmware

You need to upgrade to … .NETMF4.1 … you can use “TeraTerm”, or the auto app. “USBiziUpdater” program… if for some reason you have problems… tell us what version of Windows you have and/or what steps you get stuck in.

I got the same error message “Error: a3000000” when I was an old project (prior to June 30) wanted to change.
My solution to this problem is all the “References” remove and re-add