# Grin Node wont start
**URL:** https://forum.grin.mw/t/grin-node-wont-start/3388
**Category:** Tech Support
**Created:** [January 27, 2019, 7:00pm UTC](https://forum.grin.mw/t/grin-node-wont-start/3388 "2019-01-27T19:00:17Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@qsc](https://forum.grin.mw/u/qsc)
#### Post date: [January 27, 2019, 7:00pm UTC](https://forum.grin.mw/t/grin-node-wont-start/3388/1 "2019-01-27T19:00:18Z")
Hi I’m unable to run node on Ubuntu 16.04
After running ‘grin’ in terminal TUI doesn’t appear
instead it gets me back to prompt
Logs look like this
20190127 19:57:46.848 INFO grin\_util::logger - log4rs is initialized, file level: Debug, stdout level: Warn, min. level: Debug
20190127 19:57:46.848 INFO grin - Using configuration file at /home/cakara/grin/grin-server.toml
20190127 19:57:46.848 INFO grin - This is Grin version 1.0.0 (git v1.0.0), built for x86\_64-unknown-linux-gnu by rustc 1.31.1 (b6c32da9b 2018-12-18).
20190127 19:57:46.848 DEBUG grin - Built with profile “release”, features “”.
20190127 19:57:46.848 WARN grin::cmd::server - Starting GRIN in UI mode…
20190127 19:57:46.848 INFO grin\_servers:😁:server - Starting server, genesis block: 40adad0aec27
20190127 19:57:46.880 DEBUG grin\_chain::txhashset::txhashset - Error returned, discarding txhashset extension: Other Error: output vs rproof MMRs different sizes
Cause: Unknown
Backtrace:
20190127 19:57:46.897 ERROR grin\_util::logger -
thread ‘main’ panicked at 'called `Result::unwrap()` on an `Err` value: Chain(Error { inner:
Other Error: output vs rproof MMRs different sizes })’: libcore/result.rs:1009stack backtrace:
0: 0x55cb5148d79d - backtrace::backtrace::trace::hd74837959dc31a2c
1: 0x55cb5148c9b2 - \::default::hfbe03539066da14f
2: 0x55cb5148ca29 - backtrace::capture::Backtrace:🆕:hd9d47426559d8b68
3: 0x55cb51416630 - grin\_util::logger::send\_panic\_to\_log::{{closure}}::h6b81febaf2dee014
4: 0x55cb5155e226 - std::panicking::rust\_panic\_with\_hook::hde420d6fd4455550
at libstd/panicking.rs:480
5: 0x55cb5155dd71 - std::panicking::continue\_panic\_fmt::h8f394f3c578bcc76
at libstd/panicking.rs:390
6: 0x55cb5155dc55 - rust\_begin\_unwind
at libstd/panicking.rs:325
7: 0x55cb515a7ccc - core::panicking::panic\_fmt::hca5dc4e8b320bc56
at libcore/panicking.rs:77
8: 0x55cb50ce7419 - core::result::unwrap\_failed::h830a8bfc4a83e400
9: 0x55cb50c833b0 - grin::cmd::server::start\_server::h865872809e516a65
10: 0x55cb50c84068 - grin::cmd::server::server\_command::hc789d325932205ed
11: 0x55cb50d139fc - grin::real\_main::h7464ec6aee075aa9
12: 0x55cb50d11ee5 - grin::main::h76cf7ec850a9936e
13: 0x55cb50ce01d2 - std::rt::lang\_start::{{closure}}::hd67b3eb73f2382c8
14: 0x55cb5155dbf2 - std::rt::lang\_start\_internal::{{closure}}::hafa8ecdacd368ebb
at libstd/rt.rs:59
- std::panicking::try::do\_call::h8c0dbb48abbdf4df
at libstd/panicking.rs:310
15: 0x55cb515702c9 - \_\_rust\_maybe\_catch\_panic
at libpanic\_unwind/lib.rs:102
16: 0x55cb5153f44a - std::panicking::try::hbc21637ba5f64d73
at libstd/panicking.rs:289
- std::panic::catch\_unwind::h954917b922b8d970
at libstd/panic.rs:392
- std::rt::lang\_start\_internal::h5b2de3cc38c3b406
at libstd/rt.rs:58
17: 0x55cb50d14364 - main
18: 0x7f38c095682f - \_\_libc\_start\_main
19: 0x55cb50c56980 -
20: 0x0 -
---
### Author:  [@dwayne](https://forum.grin.mw/u/dwayne)
#### Post date: [January 27, 2019, 7:15pm UTC](https://forum.grin.mw/t/grin-node-wont-start/3388/2 "2019-01-27T19:15:42Z")
Does the directory you are in when you run the **grin** command have a copy of the file grin-server.toml in it **or** do you have a copy of that file in the ~/.grin/main directory?
---
### Author:  [@qsc](https://forum.grin.mw/u/qsc)
#### Post date: [January 28, 2019, 8:48am UTC](https://forum.grin.mw/t/grin-node-wont-start/3388/3 "2019-01-28T08:48:39Z")
Tried both default config and generating with grin server config
Also when I tried to set up everything from scratch got core dump message