# RapidCart Pro: Could not obtain Plug in principal class **URL:** \ **Category:** RapidWeaver Classic\ **Created:** [January 9, 2019, 5:39pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444 "2019-01-09T17:39:13Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![fvandergeest](https://avatars.discourse-cdn.com/v4/letter/f/ecb155/32.png) [@fvandergeest](https://forums.realmacsoftware.com/u/fvandergeest)\ **Post date:** [January 9, 2019, 5:39pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/1 "2019-01-09T17:39:13Z")
Madness! RapidCart Pro can no longer load since last update to RW8! Iy gives this message: ![23](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/2X/c/c584dbff8d4e589bdb36a5444c4bf67a885b5733.jpeg) ---
**Author:** ![mikegyver](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@mikegyver](https://forums.realmacsoftware.com/u/mikegyver)\ **Post date:** [January 9, 2019, 6:06pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/2 "2019-01-09T18:06:43Z")
I am having this problem as well. I thought it was because I was using RW7, but I upgraded and still same issue. Please let us know once you see an fix. Kinda urgent for those who need to make an update! ---
**Author:** ![fvandergeest](https://avatars.discourse-cdn.com/v4/letter/f/ecb155/32.png) [@fvandergeest](https://forums.realmacsoftware.com/u/fvandergeest)\ **Post date:** [January 9, 2019, 6:20pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/3 "2019-01-09T18:20:10Z")
Yes, I have it now in RW7 as well as in RW8. In December everything was still fine. I guess a certificate thing? It is VERY BAD as I can not update my store now. The developer of RapidCart has no way of contacting them, no e-mail, no web mail form etc. Bit panicing here! ---
**Author:** ![EricW](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/ericw/32/217_2.png) [@EricW](https://forums.realmacsoftware.com/u/EricW)\ **Post date:** [January 9, 2019, 6:20pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/4 "2019-01-09T18:20:25Z")
See other thread, Foreground is investigating issue already 👍🏼 ---
**Author:** ![fvandergeest](https://avatars.discourse-cdn.com/v4/letter/f/ecb155/32.png) [@fvandergeest](https://forums.realmacsoftware.com/u/fvandergeest)\ **Post date:** [January 9, 2019, 6:27pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/5 "2019-01-09T18:27:46Z")
Hi Eric, which thread is that? can you post a link? A search did not get me to that topic… Thanks! ---
**Author:** ![thang](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/thang/32/303_2.png) [@thang](https://forums.realmacsoftware.com/u/thang)\ **Post date:** [January 9, 2019, 6:40pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/6 "2019-01-09T18:40:44Z")
It’s here: > [@RapidCart plugin missing](http://forums.realmacsoftware.com/t/rapidcart-plugin-missing/24443): > > I’ve been using RapidWeaver 8 and RapidCart Pro with no problem since the update to RW 8. Suddenly today, when I open RapidWeaver, I get a message that the RapidCart Pro plugin is missing. The Store page does not load. I have tried re-downloading and installing RapidCart Pro, but that does not help. I have no clue as to what the problem might be and would value any advice. ---
**Author:** ![mikegyver](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@mikegyver](https://forums.realmacsoftware.com/u/mikegyver)\ **Post date:** [January 9, 2019, 6:59pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/8 "2019-01-09T18:59:41Z")
> [@fvandergeest](#): > > Yes, I have it now in RW7 as well as in RW8. In December everything was still fine. I guess a certificate thing? It is VERY BAD as I can not update my store now. The developer of RapidCart has no way of contacting them, no e-mail, no web mail form etc. > Bit panicing here! Me too! I’m in bit of pressure because I really need to update my site! I’m actually thinking that I should move off RW and try another web client… ---
**Author:** ![pcfw2](https://avatars.discourse-cdn.com/v4/letter/p/5daacb/32.png) [@pcfw2](https://forums.realmacsoftware.com/u/pcfw2)\ **Post date:** [January 9, 2019, 8:55pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/9 "2019-01-09T20:55:57Z")
4gnd just released RapidCart Pro 4.12.1 which should fix the issue ---
**Author:** ![rob](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/rob/32/24188_2.png) [@rob](https://forums.realmacsoftware.com/u/rob)\ **Post date:** [January 9, 2019, 10:19pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/10 "2019-01-09T22:19:56Z")
I confirm the problem has been fixed. Just download the update we have just released. ---
**Author:** ![fvandergeest](https://avatars.discourse-cdn.com/v4/letter/f/ecb155/32.png) [@fvandergeest](https://forums.realmacsoftware.com/u/fvandergeest)\ **Post date:** [January 9, 2019, 10:54pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/11 "2019-01-09T22:54:03Z")
Update did show and installed, indeed fixed! Pfew! ---
**Author:** ![EricW](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/ericw/32/217_2.png) [@EricW](https://forums.realmacsoftware.com/u/EricW)\ **Post date:** [January 10, 2019, 8:08pm UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/12 "2019-01-10T20:08:56Z")
Thanks Rob for the quick solution! ---
**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/system/32/25301_2.png) [@system](https://forums.realmacsoftware.com/u/system)\ **Post date:** [February 10, 2019, 6:20am UTC](https://forums.realmacsoftware.com/t/rapidcart-pro-could-not-obtain-plug-in-principal-class/24444/13 "2019-02-10T06:20:38Z")
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