# en error in 2020.1 **URL:** \ **Category:** User discussions\ **Created:** [December 21, 2020, 7:32am UTC](https://gromacs.bioexcel.eu/t/en-error-in-2020-1/1299 "2020-12-21T07:32:03Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![mshadman](https://avatars.discourse-cdn.com/v4/letter/m/3da27b/32.png) [@mshadman](https://gromacs.bioexcel.eu/u/mshadman)\ **Post date:** [December 21, 2020, 7:32am UTC](https://gromacs.bioexcel.eu/t/en-error-in-2020-1/1299/1 "2020-12-21T07:32:03Z")
GROMACS version: 2020.1 GROMACS modification: No Here post your question Dear developers of GROMACS We observe an error in 2020.1: As you can see in a file of bilayer.gro (it is our initiated file) every thing is OK. So, after minimization, number of residues are deleted and all residues have only same number. please check bilayer\_min.gro. It happen before and after ion addition as well as before and after index process. I mean, after any minimization we observe this error. for instance; all LES in column 2 are 1LES after minimization. Also, all SOL in column 2 are 1SOL after minimization and so on. we have not seen this error in 2018.1 version. Let us how we can handle this error. ---
**Author:** ![alevilla](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/alevilla/32/439_2.png) [@alevilla](https://gromacs.bioexcel.eu/u/alevilla)\ **Post date:** [December 21, 2020, 7:53am UTC](https://gromacs.bioexcel.eu/t/en-error-in-2020-1/1299/2 "2020-12-21T07:53:09Z")
Hi, The bug has been resolved in 2020.4 (see release note [http://manual.gromacs.org/current/release-notes/2020/2020.4.html](http://manual.gromacs.org/current/release-notes/2020/2020.4.html)). Please update your version to 2020.4 or higher > **[Downloads — GROMACS 2020.4 documentation](http://manual.gromacs.org/current/download.html)** Best regards Alessandra ---
**Author:** ![mshadman](https://avatars.discourse-cdn.com/v4/letter/m/3da27b/32.png) [@mshadman](https://gromacs.bioexcel.eu/u/mshadman)\ **Post date:** [December 21, 2020, 10:52am UTC](https://gromacs.bioexcel.eu/t/en-error-in-2020-1/1299/3 "2020-12-21T10:52:16Z")
So many thanks this is a good news Cheers Muhammd ---
**Author:** ![mshadman](https://avatars.discourse-cdn.com/v4/letter/m/3da27b/32.png) [@mshadman](https://gromacs.bioexcel.eu/u/mshadman)\ **Post date:** [December 21, 2020, 11:31am UTC](https://gromacs.bioexcel.eu/t/en-error-in-2020-1/1299/4 "2020-12-21T11:31:47Z")
Dear Alessandra Has this version, 2020.4 released for Ubuntu 2020? I check it and the latest version in Ubuntu is 2020.1-1 and I do not want use dirty installation. Cheers Muhammad ---
**Author:** ![alevilla](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/alevilla/32/439_2.png) [@alevilla](https://gromacs.bioexcel.eu/u/alevilla)\ **Post date:** [December 22, 2020, 8:59am UTC](https://gromacs.bioexcel.eu/t/en-error-in-2020-1/1299/5 "2020-12-22T08:59:02Z")
Hi, Sorry, I am not using Ubuntu my self. In the ubuntu main page, you can find GROMACS2020.4, but I do not know if it applies to any ubuntu version. Maybe someelse knows more about. Best regards Alessandra ---
**Author:** ![anthonycbishop](https://avatars.discourse-cdn.com/v4/letter/a/8e8cbc/32.png) [@anthonycbishop](https://gromacs.bioexcel.eu/u/anthonycbishop)\ **Post date:** [December 22, 2020, 10:11pm UTC](https://gromacs.bioexcel.eu/t/en-error-in-2020-1/1299/6 "2020-12-22T22:11:04Z")
Muhammad, Which version of Ubuntu are you running? I ask because I have been having general problems using the gromacs package in the Ubuntu software repositories on Ubuntu 20.04.1. I have also run into problems with my own personal builds. > [@Several "make check" tests time out and compiled gmx binary hangs](https://gromacs.bioexcel.eu/t/several-make-check-tests-time-out-and-compiled-gmx-binary-hangs/1298/2): > > UPDATE: I used sudo apt-get install gromacs on Ubuntu 20.04.1 to get the precompiled binaries of gromacs 2020.1 (different from version 2020.4 as I was using above). The gmx binary also has an identical hanging issue between these two different versions and build methods. I also did a fresh re-installation of the OS, with no improvement. I also tried rebuilding version 2020.4 again with gcc-8.4.0 and CUDA-11.1, as well as just gcc-8.4.0 with graphics card support entirely turned off, so I am … -AB