API access to Managed Package from Multiple Hosts

I have a managed package and that I can access successfully (through api) from my host 'host1.com' but when I try to access it from my development host 'host2.com' I get the error message:

Call to token URL https://login.salesforce.com/services/oauth2/token failed with status 400, response {"error":"invalid_grant","error_description":"expired access/refresh token"

I believe my access and refresh tokens are correct as I have copied them over from the working host 'host1.com'. Can I only access a package from one host? or am I doing something else wrong? I have remote access set up for both hosts so that they each have their own consumer key and consumer secret.