3rd party plugins do not work in 64 bit?

[bosone]

i have just installed scope 64 on win7 and i just noticed that a lot of free old devices developed by 3rd party are not working.
is it correct or am i doing something wrong??
is there a workaround?

this includes also some devices i developed with sdk 4

[mausmuso]

Can you give some examples?
Most work here Scope 5.12709 x64 on a Win 7 64bit machine.