If you ever encounter a pop-up that states 'Error Out of Memory/Storage', or when you import drawings and they appear as blank white sheets or a gray background, that is almost always caused by loading in images at too high of DPI.
The problem with that is there can be many different things wrong causing that and it makes it difficult to fix.
The two ways to cover most of the issues will be:
Re-import the images in PlanSwift. When you get to the Tiff Conversion tool, make sure the DPI is set at "200". Most images come in clear and error-free when set to this standard. However, you can be flexible with that number depending on the image within the PDF before it's converted.
You can choose to decrease or increase that number depending on what you want. Decreasing it will decrease the memory used by PlanSwift but will decrease the quality. Increasing the number will increase the memory used making it more likely for the error message to appear, but will increase the quality. We have found that if you change the DPI up to 100 in either direction will resolve most issues.
Also, choosing to import the image as black and white rather than the grayscale option will use less memory.
If the first fix didn't work, then the image before conversion can be the issue.
PDF's, for example, will have upwards of 7000 DPI, and, remember, PlanSwift's standard is 200 for conversion, so even though it's converted at 200, the original image could be too large still.
The fix for this is to reprint the PDF with a PDF printer like Adobe or CutePDF Writer. (CutePDF Writer can be found here.)
In the printer settings, go to Properties then Advanced and choose to reprint at a lower DPI; a lot of times the lowest DPI (72) is a perfectly clear image and will import with no problems.
If those two solutions didn't work, then it might be a problem with the PDF, so asking the sender to resend could be the fastest way to fix it.