I've been trying to send Bitcoin from my wallet on Linux, which I had linked with a Max Electrum wallet, the latter as co-signer.

I upgraded my Mac wallet and seem to have a new Bitcoin address and private key. Although I used my word seen to restore the old wallet, the old address and private key is not there.

How can I make transactions now from the Linux wallet without the original co-signer Private & Public Master Key/and address?

Can I remove the multisig feature and just go back to a standard wallet. KISS (keep it simple stupid!)?

It would be great to get help please.

I had been trying to verify blocks which were long since rebuilt, because i had neglected to run the client. I struggled to get it going again after various crashes and using Time Machine to help me out.

Having run Bitcoin-qt on my Macbook now for over a week, and seen steady rebuilding going on, today i had what i think was an external electrical problem and my Mac switched off. It's okay again, in fact automatically rebooted. However Bitcoin-qt would not start up again. I have tried all the previous remedies incl. time machine backups, although I turned this off once things started again before to speed it all up! so had nothing to restore except the .app, and to no avail I get different crash reports, if I try to run the old original version that had been working ok until today (0.8.5) - it reports:

Process:         Bitcoin-Qt [1041]
Path:            /Applications/zNET/internet/Bitcoin-Qt.app/Contents/MacOS/Bitcoin-Qt
Identifier:      org.bitcoinfoundation.Bitcoin-Qt
Version:         0.8.5 (0.8.5)
Code Type:       X86 (Native)
Parent Process:  launchd [169]

Date/Time:       2015-04-07 17:35:25.708 +0100
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version:  6

Interval Since Last Report:          532770 sec
Crashes Since Last Report:           49
Per-App Interval Since Last Report:  1123463 sec
Per-App Crashes Since Last Report:   25
Anonymous UUID:                      FAD8C0E0-FC01-48A3-BCDD-2C5E51DB3FEF

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread:  5

Application Specific Information:
Assertion failed: (pindexFirst), function GetNextWorkRequired, file src/main.cpp, line 1138.


 
   If i try to use the most recent version I get a different report.

Is there any obvious solution anyone can identify, and help me with?

Thank you.

I use a MacBook and cannot upgrade beyond the current 10.6.8 system, and i'm trying to install earthcoin-qt. I've failed to install the EC wallet on several attempts. Support suggested I post here:

I tried (from Bitcointalk-  this link  https://www.dropbox.com/s/nedq6wmb8w04gv3/Earthcoin-Qt-MacOSX-v1.1.0.0-instacash.zip)   but like other ones below, which includes that found on the Earthcoin website, to download (the others came from support) I get various but similar ERROR messages, when trying to install the wallet,


Process:         launchd [390]
Path:            /Users/a/Downloads/EarthCoin-Qt 2.app/Contents/MacOS/EarthCoin-Qt
Identifier:      com.yourcompany.EarthCoin-Qt
Version:         ()
Code Type:       X86-64 (Native)
Parent Process:  launchd [157]

Date/Time:       2014-02-08 22:58:30.884 +0000
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version:  6

Interval Since Last Report:          164437 sec
Crashes Since Last Report:           23
Per-App Crashes Since Last Report:   9
Anonymous UUID:                      FAD8C0E0-FC01-48A3-BCDD-2C5E51DB3FEF

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0xfffffffffffffff8
Crashed Thread:  Unknown

Backtrace not available

Unknown thread crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000055  rbx: 0x0000000000000000  rcx: 0x0000000000000000  rdx: 0x0000000000000000
  rdi: 0x0000000000000000  rsi: 0x0000000000000000  rbp: 0x0000000000000000  rsp: 0x0000000000000000
   r8: 0x0000000000000000   r9: 0x0000000000000000  r10: 0x0000000000000000  r11: 0x0000000000000000
  r12: 0x0000000000000000  r13: 0x0000000000000000  r14: 0x0000000000000000  r15: 0x0000000000000000
  rip: 0x00007fff5fc01028  rfl: 0x0000000000010203  cr2: 0xfffffffffffffff8

Binary images description not available


Model: MacBook2,1, BootROM MB21.00A5.B07, 2 processors, Intel Core 2 Duo, 2 GHz, 2 GB, SMC 1.13f3
Graphics: Intel GMA 950, GMA 950, Built-In, spdisplays_integrated_vram
Memory Module: global_name




Using  this one:
http://getearthcoin.com/EarthCoin-Qt-MacOSX-v1.1.0.0-insc.zip Earthcoin-Qt quit unexpectedly

Process:         launchd [5310]
Path:            /Users/a/Desktop/EarthCoin-Qt 3.app/Contents/MacOS/EarthCoin-Qt
Identifier:      com.yourcompany.EarthCoin-Qt
Version:         ()
Code Type:       X86-64 (Native)
Parent Process:  launchd [162]

Date/Time:       2014-02-07 22:47:55.646 +0000
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version:  6

Interval Since Last Report:          135788 sec
Crashes Since Last Report:           15
Per-App Crashes Since Last Report:   3
Anonymous UUID:                      FAD8C0E0-FC01-48A3-BCDD-2C5E51DB3FEF

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0xfffffffffffffff8
Crashed Thread:  Unknown

Backtrace not available

Unknown thread crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000055  rbx: 0x0000000000000000  rcx: 0x0000000000000000  rdx: 0x0000000000000000
  rdi: 0x0000000000000000  rsi: 0x0000000000000000  rbp: 0x0000000000000000  rsp: 0x0000000000000000
   r8: 0x0000000000000000   r9: 0x0000000000000000  r10: 0x0000000000000000  r11: 0x0000000000000000
  r12: 0x0000000000000000  r13: 0x0000000000000000  r14: 0x0000000000000000  r15: 0x0000000000000000
  rip: 0x00007fff5fc01028  rfl: 0x0000000000010203  cr2: 0xfffffffffffffff8

Binary images description not available


And these also failed:
http://getearthcoin.com/earthcoinmacosx-unbranded.zip 
Earthcoin-Qt quit unexpectedly 

Process:         launchd [5310] 
Path:            /Users/a/Desktop/EarthCoin-Qt 
3.app/Contents/MacOS/EarthCoin-Qt 
Identifier:      com.yourcompany.EarthCoin-Qt 
Version:         () 
Code Type:       X86-64 (Native) 
Parent Process:  launchd [162] 

Date/Time:       2014-02-07 22:47:55.646 +0000 
OS Version:      Mac OS X 10.6.8 (10K549) 
Report Version:  6 



Interval Since Last Report:          135788 sec 
Crashes Since Last Report:           15 
Per-App Crashes Since Last Report:   3 
Anonymous UUID:                      FAD8C0E0-FC01-48A3-BCDD-2C5E51DB3FEF 

Exception Type:  EXC_BAD_ACCESS (SIGSEGV) 
Exception Codes: KERN_INVALID_ADDRESS at 0xfffffffffffffff8 
Crashed Thread:  Unknown 

Backtrace not available 

Unknown thread crashed with X86 Thread State (64-bit): 
  rax: 0x0000000000000055  rbx: 0x0000000000000000  rcx: 
0x0000000000000000  rdx: 0x0000000000000000 
  rdi: 0x0000000000000000  rsi: 0x0000000000000000  rbp: 
0x0000000000000000  rsp: 0x0000000000000000 
   r8: 0x0000000000000000   r9: 0x0000000000000000  r10: 
0x0000000000000000  r11: 0x0000000000000000 
  r12: 0x0000000000000000  r13: 0x0000000000000000  r14: 
0x0000000000000000  r15: 0x0000000000000000 
  rip: 0x00007fff5fc01028  rfl: 0x0000000000010203  cr2: 0xfffffffffffffff8 

Binary images description not available 


http://getearthcoin.com/earthcoin-qt.alpha.dmg.zip 
Process:         EarthCoin-Qt [465]
Path:            /Volumes/EarthCoin-Qt/EarthCoin-Qt.app/Contents/MacOS/EarthCoin-Qt
Identifier:      com.yourcompany.EarthCoin-Qt
Version:         ()
Code Type:       X86-64 (Native)
Parent Process:  launchd [160]

Date/Time:       2014-02-08 06:32:18.201 +0000
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version:  6

Interval Since Last Report:          163436 sec
Crashes Since Last Report:           22
Per-App Crashes Since Last Report:   14
Anonymous UUID:                      FAD8C0E0-FC01-48A3-BCDD-2C5E51DB3FEF

Exception Type:  EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread:  0

Dyld Error Message:
  Library not loaded: /usr/lib/libc++.1.dylib
  Referenced from: /Volumes/EarthCoin-Qt/EarthCoin-Qt.app/Contents/MacOS/EarthCoin-Qt
  Reason: image not found

Binary Images:
    0x7fff5fc00000 -     0x7fff5fc3be0f  dyld 132.1 () <29DECB19-0193-2575-D838-CF743F0400B2> /usr/lib/dyld

Model: MacBook2,1, BootROM MB21.00A5.B07, 2 processors, Intel Core 2 Duo, 2 GHz, 2 GB, SMC 1.13f3
Graphics: Intel GMA 950, GMA 950, Built-In, spdisplays_integrated_vram
Memory Module: global_name