Can anybody tell me about Nokia e72 error?

Error 453 is caused due to missing of a specific DLL file. Dll expands to Dynamic-link library. I think you use one of the versions of windows OS. DLL files are designed to be used in windows environment. It contains the functionalities and resources needed for programs to perform its task. A DLL file is created by writing the required code and saving it with a .dll extension. Your phone shows this error at the start because your phone lacks some DLL file required for the initial function of starting the phone.

Technically you can check for the following and do the following changes to the code:

a) A specific function exists but is been referred wrongly.so check if such an error exists and correct it by giving proper reference to the function.

b) Reference to the function is correct but you have a different version of the function performed. So check for it and ask your supplier for the required version.

c) In a 32-bit MS windows platform, DLL name and its duplicate should be same. Check for it and correct it.