# Need help installing library(real) **URL:** \ **Category:** Pack\ **Created:** [October 28, 2020, 4:48pm UTC](https://swi-prolog.discourse.group/t/need-help-installing-library-real/3134 "2020-10-28T16:48:40Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![JAB](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jab/32/2978_2.png) [@JAB](https://swi-prolog.discourse.group/u/JAB)\ **Post date:** [October 30, 2020, 7:49pm UTC](https://swi-prolog.discourse.group/t/need-help-installing-library-real/3134/3 "2020-10-30T19:49:46Z")
Dear Nicos, Thank you for your message. I tried complete reinstall from R and Swi but the problem is still there : ![image](https://global.discourse-cdn.com/free1/uploads/swiprolog/original/2X/3/322058098b226844bc7e3dbf3605e2dbb5a85584.png) Yes I had previous version of SWI and R on this Laptop, but I uninstalled the old versions, checked that path was reset and register also before installing the new versions. I spent a whole day on testing various versions of R and SWi, and none worked correctly. I installed R and SWI on my wife’s old PC and it works correctly, but it is not a solution. I can’t understand why a clean reinstallation doesn’t work… Do you, or someone else, have a hint on what I can do without having to use “virtual box” or “dual boot” (too complex for me …). Thank you in advance for your help. best regards JAB --- _[View the full topic](https://swi-prolog.discourse.group/t/need-help-installing-library-real/3134)._