<p>I had exactly the same problem with <em>litecoin</em> 0.15.1 and it helped me to run it with <code>--reindex</code> option on the command line. I only had to do it once...</p>

CC BY-SA 4.0
2018-05-19T01:55:56.983Z
2018-05-19T01:55:56.983Z
Onlyjob
<p>!setBlockIndexCandidates.empty() Bitcoin Core 0.11 error</p>

<p>Hello, </p>

<p>I have a problem with the Bitcoin Core v. 0.11 software!!!</p>

<p>I installed the software today and after a long wait (downloading block source - 5 years) I closed the application and when I tried to start it again I received this error: </p>

<p>"Assertion failed!
File: main.cpp, Line 2287
Expression: !setBlockIndexCandidates.empty()"</p>

<p>If I click Ignore on the error window the program start but with "No block source available" so it can't continue the download. And when I close the program I receive a FATAL ERROR message: "see debug.log for details"</p>

<p>Can somebody tell me how do I fix this error or what do I do next?
And another thing... 
I was sent today some Bitcoins and I am asking if the sun can be recovered somehow?</p>

<p>Thanks!</p>

<p><a href="http://pastebin.com/raw.php?i=AV1B0UnK" rel="nofollow">debug.log</a></p>

CC BY-SA 3.0
2015-08-10T06:08:17.870Z
Can you take the last 30 lines or so of %APPDATA%\Bitcoin\debug.log and edit them into your answer?
Nick ODell
CC BY-SA 3.0
2015-08-11T13:23:03.780Z
Did you try to delete the `blocks` and `chainstate` directory in the bitcoin datadir?
Jonas Schnelli
<bitcoin-core>
!setBlockIndexCandidates.empty()
CashJo
# !setBlockIndexCandidates.empty()

(Asked by: username_0 on 2015-08-10)

!setBlockIndexCandidates.empty() Bitcoin Core 0.11 error

Hello,

I have a problem with the Bitcoin Core v. 0.11 software!!!

I installed the software today and after a long wait (downloading block source - 5 years) I closed the application and when I tried to start it again I received this error:

"Assertion failed!
File: main.cpp, Line 2287
Expression: !setBlockIndexCandidates.empty()"

If I click Ignore on the error window the program start but with "No block source available" so it can't continue the download. And when I close the program I receive a FATAL ERROR message: "see debug.log for details"

Can somebody tell me how do I fix this error or what do I do next?
And another thing...
I was sent today some Bitcoins and I am asking if the sun can be recovered somehow?

Thanks!

[debug.log](http://pastebin.com/raw.php?i=AV1B0UnK)

**Tags:** bitcoin-core

> **Comments:**
> **username_1**: Can you take the last 30 lines or so of %APPDATA%\Bitcoin\debug.log and edit them into your answer?  
> **username_2**: Did you try to delete the `blocks` and `chainstate` directory in the bitcoin datadir?  

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## 1 answers

### Answer by username_3 on 2018-05-19. Score: 1

I had exactly the same problem with *litecoin* 0.15.1 and it helped me to run it with `--reindex` option on the command line. I only had to do it once...


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