# Excited, however not working as expected **URL:** \ **Category:** RapidWeaver Classic\ **Created:** [March 30, 2021, 4:41am UTC](https://forums.realmacsoftware.com/t/excited-however-not-working-as-expected/38458 "2021-03-30T04:41:13Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Xord](https://avatars.discourse-cdn.com/v4/letter/x/6a8cbe/32.png) [@Xord](https://forums.realmacsoftware.com/u/Xord)\ **Post date:** [March 30, 2021, 4:41am UTC](https://forums.realmacsoftware.com/t/excited-however-not-working-as-expected/38458/1 "2021-03-30T04:41:13Z")
2021-03-29T06:00:00Z Hello, I recently purchased RapidWeaver - and have this environment - MacOS 11.2.3 Big Sur; Rapidweaver 8.8.1 (20868) **First Issue:** Decided to purchase STACKS 4 - got the bundle package. Stacks installs OK (I think), however none of the other plugins work?!? When I start RW, I get the following errors: - Accordion: Couldn’t obtain plugin principal class - Blocks: Couldn’t obtain plugin principal class - Collage2: Couldn’t obtain plugin principal class - Flow: Couldn’t obtain plugin principal class - PlusKit: Couldn’t obtain plugin principal class It also had an error for STACKS itself similar to the above, however after I registered it, I don’t see that error anymore. UPDATE - it appears that the plugins are not universal - [RapidWeaver 8.8 is now available as a universal build](http://forums.realmacsoftware.com/t/rapidweaver-8-8-is-now-available-as-a-universal-build/38379) (read the second post) **Second Issue** I purchased Foundry v2, and that seamed to install OK Downloaded Mason; clicked on it, and it appears to install OK When creating a simple test page - adding Foundry Control Center then any Call-To-Action - whatever CTA I select looks weird (compared to the example videos), and when I unpack anything and click on it, this error shows: - Missing - Missing Stack Info - (null) Not Installed… Is there an incompatibility here too, or am I missing something. Thx for your feedback ---
**Author:** ![Fuellemann](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/fuellemann/32/22871_2.png) [@Fuellemann](https://forums.realmacsoftware.com/u/Fuellemann)\ **Post date:** [March 30, 2021, 5:40am UTC](https://forums.realmacsoftware.com/t/excited-however-not-working-as-expected/38458/2 "2021-03-30T05:40:45Z")
Hi, for some mason templates you need the foundry add ons like potion pack. You can see these requirements on the mason site: ![image](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/3X/f/f/ffcac44c8105e01ef891e64490cd3bd15c00c8aa.jpeg) ---
**Author:** ![Custard-Apple](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/custard-apple/32/22478_2.png) [@Custard-Apple](https://forums.realmacsoftware.com/u/Custard-Apple)\ **Post date:** [March 30, 2021, 5:43am UTC](https://forums.realmacsoftware.com/t/excited-however-not-working-as-expected/38458/3 "2021-03-30T05:43:28Z")
Force RW to run via Rosetta via its Finder info dialogue. ---
**Author:** ![DaSch](https://avatars.discourse-cdn.com/v4/letter/d/b2d939/32.png) [@DaSch](https://forums.realmacsoftware.com/u/DaSch)\ **Post date:** [March 30, 2021, 8:38am UTC](https://forums.realmacsoftware.com/t/excited-however-not-working-as-expected/38458/4 "2021-03-30T08:38:53Z")
Thank you, Custard-Apple! This is an extremely valuable hint - I had this issue and it’s solved now. ---
**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:** [April 29, 2021, 6:39pm UTC](https://forums.realmacsoftware.com/t/excited-however-not-working-as-expected/38458/5 "2021-04-29T18:39:00Z")
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