version . 55
desktop 32 bit version-and possibly other versions >>> You will only see this error at the very start of a colony
click on water tank click stats try to click upgrade all shows water tank upgrades to BIG silo
and will not upgrade all .
can upgrade one at a time can build totally new water towers just cant use upgrade all .
Building even ONE water tower from the build minu clears the error
Don't know if its even worth messing with as its a very short lived error
In order to reproduce you would need to build a new colony then try upgrading all water tanks Before you build even one water tower .
After building even One water tower off the build minu the error clears and then all water tanks become upgrade ALL to water towers again and shows that in stats as normal .
probably why its never been seen before