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Problem Safari[419]: CGContextSaveGState: invalid context 0x0.

My logbook (ASL) gives me the following problem: "1 dec. 2015 17:08:30 Safari[419]: CGContextSaveGState: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update." What should I do?

I have a MacBook Pro with processor 2,3 GHz Intel Core i7 with a memory of 4Gb, 1600 MHz, with video Intel HD Graphics 4000 1024Mb. The laptop is becoming very slow in starting up.

MacBook Pro (15-inch Mid 2012), OS X Yosemite (10.10.5)

Posted on Dec 1, 2015 8:52 AM

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Problem Safari[419]: CGContextSaveGState: invalid context 0x0.

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