Achievements fail to work

[vplus]

Some achievements, particularly ones that require counting, are failing to unlock, namely:

Land Baron - Purchase 1000 tiles, across any number of playthroughs.
The Explorer - Discover 100 Natural Wonders.
The Appian Way - Build 1000 roads, across any number of playthroughs.
Forty-Niner - Build 1000 mines, across any number of playthroughs
Paul Bunyan - Chop down 1000 forest tiles, across any number of playthroughs
God Is Great - Construct 1000 Temples, across any number of playthroughs.

Is this a common problem? And does anybody know how to fix it?