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[V7.3.0 - geoscape] - engineering screen - cannot construct phantom engine upgrade as it needs 50 alien alloys, but we have 50 alien alloys


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Posted (edited)

Description

engineering screen - cannot construct phantom engine upgrade as it needs 50 alien alloys, but we have 50 alien alloys

What Happened

Continued my 7.x campaign with v7.3.0, wanted to try out the fixed phantom engine upgrade.

Upgrade says it costs 50 alloys, I only had 40. I got my engineers to fabricate another 10 alloys.

When engineers had built 50 alloys, I went to build the engine upgrade.

The engineering screen showed the 50 alloys cost requirement in red, and clicking "start production" produced an error message stating it needed 50 alloys.

 

screenshot_on_userf11.thumb.jpg.7e7c55645ca22ccd848b363e6d936f66.jpg

 

 

Further Info

The issue isn't preserved by saving the game and loading it again -- the upgrade can be purchased immediately after loading the f11 save, despite the captured f11 screenshot showing it not working.

Please see attached f11 bug report zip:  bug_report_2026-02-26-14h41_st_7.3.0_user_f11_0.zip

Edited by fusion-waffle
Posted
5 hours ago, fusion-waffle said:

Description

engineering screen - cannot construct phantom engine upgrade as it needs 50 alien alloys, but we have 50 alien alloys

What Happened

Continued my 7.x campaign with v7.3.0, wanted to try out the fixed phantom engine upgrade.

Upgrade says it costs 50 alloys, I only had 40. I got my engineers to fabricate another 10 alloys.

When engineers had built 50 alloys, I went to build the engine upgrade.

The engineering screen showed the 50 alloys cost requirement in red, and clicking "start production" produced an error message stating it needed 50 alloys.

 

screenshot_on_userf11.thumb.jpg.7e7c55645ca22ccd848b363e6d936f66.jpg

 

 

Further Info

The issue isn't preserved by saving the game and loading it again -- the upgrade can be purchased immediately after loading the f11 save, despite the captured f11 screenshot showing it not working.

Please see attached f11 bug report zip:  bug_report_2026-02-26-14h41_st_7.3.0_user_f11_0.zip

Thanks for the report! We've been looking into this one but haven't been able to reproduce it from loading user saves. Fortunately we've been able to make a repro case for ourselves, so we'll be looking into fixing this asap!

Posted

The issue isn't specific to this phantom upgrade, it seems like it can happen when attempting to build any engineering project after producing alloys/alenium.  I was hitting it frequently in the late game while playing V7.4.0, after producing resources and then trying to build interceptors / vanguard armour / misc fusion guns.

 

Over on the steam discussion boards, VDmitry has another report of this issue, when trying to build an ARES: ([7.5.0] - couldn't build due not enough resources but I had them)

 

 

Posted
13 hours ago, fusion-waffle said:

The issue isn't specific to this phantom upgrade, it seems like it can happen when attempting to build any engineering project after producing alloys/alenium.  I was hitting it frequently in the late game while playing V7.4.0, after producing resources and then trying to build interceptors / vanguard armour / misc fusion guns.

 

Over on the steam discussion boards, VDmitry has another report of this issue, when trying to build an ARES: ([7.5.0] - couldn't build due not enough resources but I had them)

 

 

Thanks for the update! We're aware of this issue and intend to get it fixed, hopefully by the next patch.

  • Like 1
  • 2 weeks later...
Posted

I took another look at this issue in v7.9.0, as the changelog mentioned fixing a different engineering screen issue (the item count numbers being incorrect). But this other engineering screen issue is still present.  It may be fixed for alloys though? (or i got lucky?)

game version: v7.9.0

What happened

  1. had less than 50 alenium
  2. i did the "resources: alenium" engineering project repeatedly until i had 51 alenium
  3. the engineering screen blocks production of colossus automed system because it says it needs 50 alenium

screenshot_on_userf11.thumb.jpg.9d8485a605af8341150c5f0d98acc1af.jpg
Please see f11 bug report zip from v7.9.0: bug_report_2026-03-15-19h04_st_7.9.0_user_f11_0.zip

 

 

  • 2 weeks later...
Posted
On 3/5/2026 at 8:34 PM, Kouki said:

Thanks for the update! We're aware of this issue and intend to get it fixed, hopefully by the next patch.

following up re: this changelog entry from v7.11 which mentioned a potential fix for this issue:

Quote

Potentially fixed an issue where it was not possible to start engineering projects even if you had the required materials - we weren't able to reproduce this, but we fixed something that could have caused it. 

 

It is likely that the fix is good and this issue is resolved (at least in v7.12.1).

 

This issue would often occur on my machine when using the "resources" projects to manufacture alenium or alloys. But, after an hour or so of intensive resource & armour/weapons manufacturing in a v7.12.1 campaign, I did not see this issue once. v7.12.1 Engineering screen is feeling pretty solid.

  • Like 1
Posted
27 minutes ago, fusion-waffle said:

following up re: this changelog entry from v7.11 which mentioned a potential fix for this issue:

 

It is likely that the fix is good and this issue is resolved (at least in v7.12.1).

 

This issue would often occur on my machine when using the "resources" projects to manufacture alenium or alloys. But, after an hour or so of intensive resource & armour/weapons manufacturing in a v7.12.1 campaign, I did not see this issue once. v7.12.1 Engineering screen is feeling pretty solid.

Thanks for the update! Yeah, I haven't experienced it either on my playthrough so hopefully it works fine for everyone. Let us know if you encounter anything else in the game!

  • Like 1

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