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Since Firefox 4 I get error messages before F. opens and also when F. closes. I can click through, but I want my F 3.6 back please.

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Upon opening Firefox 4: This version of "Password Manager Autofill Engine" does not support your web-browser.

Please, contact developers: support@kaspersky.com.

Reason: [Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIComponentRegistrar.autoRegister]" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: chrome://kpmautofill/content/kpmOverlay.js :: kpmGetAutofill :: line 856" data: no]


Upon closing Firefox 4: Error uninitializing preferences

[Exception... "Component returned failure code: 0x80570018 (NS_ERROR_XPC_BAD_IID) [nsIJSCID.createInstance]" nsresult: "0x80570018 (NS_ERROR_XPC_BAD_IID)" location: "JS frame :: chrome://kpmautofill/content/kpmOverlay.js :: kpmRemoveAdditionalEvents :: line 821" data: no]

Upon opening Firefox 4: This version of "Password Manager Autofill Engine" does not support your web-browser. Please, contact developers: support@kaspersky.com. Reason: [Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIComponentRegistrar.autoRegister]" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: chrome://kpmautofill/content/kpmOverlay.js :: kpmGetAutofill :: line 856" data: no] Upon closing Firefox 4: Error uninitializing preferences [Exception... "Component returned failure code: 0x80570018 (NS_ERROR_XPC_BAD_IID) [nsIJSCID.createInstance]" nsresult: "0x80570018 (NS_ERROR_XPC_BAD_IID)" location: "JS frame :: chrome://kpmautofill/content/kpmOverlay.js :: kpmRemoveAdditionalEvents :: line 821" data: no]